246 results match your criteria Advanced Composite Materials[Journal]


Manufacturing ZrB-SiC-TaC Composite: Potential Application for Aircraft Wing Assessed by Frequency Analysis through Finite Element Model.

Materials (Basel) 2020 May 12;13(10). Epub 2020 May 12.

Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Korea.

This study presents a new ultra-high temperature composite fabricated by using zirconium diboride (ZrB), silicon carbide (SiC), and tantalum carbide (TaC) with the volume ratios of 70%, 20%, and 10%, respectively. To attain this novel composite, an advanced processing technique of spark plasma sintering (SPS) was applied to produce ZrB-SiC-TaC. The SPS manufacturing process was achieved under pressure of 30 MPa, at 2000 °C for 5 min. Read More

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http://dx.doi.org/10.3390/ma13102213DOI Listing

Preliminary Characterization of Glass/Alumina Composite Using Laser Powder Bed Fusion (L-PBF) Additive Manufacturing.

Materials (Basel) 2020 May 7;13(9). Epub 2020 May 7.

Department of Advanced Materials Engineering, Korea Polytechnic University, Siheung-si 15073, Korea.

Powder bed fusion (PBF) additive manufacturing (AM) is currently used to produce high-efficiency, high-density, and high-performance products for a variety of applications. However, existing AM methods are applicable only to metal materials and not to high-melting-point ceramics. Here, we develop a composite material for PBF AM by adding AlO to a glass material using laser melting. Read More

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http://dx.doi.org/10.3390/ma13092156DOI Listing
May 2020
2.651 Impact Factor

Nano-Indentation Properties of Tungsten Carbide-Cobalt Composites as a Function of Tungsten Carbide Crystal Orientation.

Materials (Basel) 2020 May 5;13(9). Epub 2020 May 5.

High Strength Materials Group, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Ibaraki Tsukuba 305-0047, Japan.

Tungsten carbide-cobalt (WC-Co) composites are a class of advanced materials that have unique properties, such as wear resistance, hardness, strength, fracture-toughness and both high temperature and chemical stability. It is well known that the local indentation properties (i.e. Read More

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http://dx.doi.org/10.3390/ma13092137DOI Listing

Effect of Different Compatibilizers on the Properties of Poly (Lactic Acid)/Poly (Butylene Adipate-Co-Terephthalate) Blends Prepared under Intense Shear Flow Field.

Materials (Basel) 2020 May 1;13(9). Epub 2020 May 1.

COFCO(jilin) Bio-Chemical Technology Co., Ltd., Changchun 130033, China.

In this report, poly(lactic acid) (PLA) and Poly(butylene adipate-co-terephthalate) (PBAT) with three kinds of compatibilizers were melt blended under intensive shear flow. A self-made parallel three-screw extruder was developed to generate such flow during the process. Mechanical properties, chemical reactions among PLA, PBAT and compatibilizers, rheological behavior and morphology were investigated. Read More

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http://dx.doi.org/10.3390/ma13092094DOI Listing

In Situ Ternary Boride: Effects on Densification Process and Mechanical Properties of WC-Co Composite Coating.

Materials (Basel) 2020 Apr 24;13(8). Epub 2020 Apr 24.

BGRIMM Technology Group, Beijing 100160, China.

New coatings resistant to corrosion in high-temperature molten zinc aluminum were prepared by supersonic flame spraying of various composite powders. These composite powders were prepared by mixing, granulation, and heat treatment of various proportions of Mo-BC powder and WC and Co powder. X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), energy dispersive X-ray spectroscopy (EDS), and mechanical analysis were used to study the effects of Mo-BC on the microstructure, phase, porosity, bonding strength, and elastic modulus of the composite powder and coating. Read More

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http://dx.doi.org/10.3390/ma13081995DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215873PMC

Effect of the Morphology of Tungsten Oxide Embedded in Sodium Alginate/Polyvinylpyrrolidone Composite Beads on the Photocatalytic Degradation of Methylene Blue Dye Solution.

Materials (Basel) 2020 Apr 17;13(8). Epub 2020 Apr 17.

Center of Physics and Engineering of Advanced Materials (CeFEMA), Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal.

Tungsten oxide nanostructures were modified by oxygen vacancies through hydrothermal treatment. Both the crystalline structure and morphological appearance were completely changed. Spherical WO·HO was prepared from tungstic acid solution by aging at room temperature, while rod-like WO·0. Read More

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http://dx.doi.org/10.3390/ma13081905DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216279PMC

Application of Electrically Conducting Nanocomposite Material Polythiophene@NiO/Frt/GOx as Anode for Enzymatic Biofuel Cells.

Materials (Basel) 2020 Apr 12;13(8). Epub 2020 Apr 12.

Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

In this work, nano-inspired nickel oxide nanoparticles (NiO) and polythiophene (Pth) modified bioanode was prepared for biofuel cell applications. The chemically prepared nickel oxide nanoparticles and its composite with polythiophene were characterized for elemental composition and microscopic characterization while using scanning electron microscopy. The electrochemical characterizations of polythiophene@NiO composite, biocompatible mediator ferritin (Frt) and glucose oxidase (GOx) catalyst modified glassy carbon (GC) electrode were carried out using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and charge-discharge studies. Read More

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http://dx.doi.org/10.3390/ma13081823DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7215782PMC

Scratch Testing of AlSi12/SiC Composite Layer with High Share of Reinforcing Phase Formed in the Centrifugal Casting Process.

Materials (Basel) 2020 Apr 4;13(7). Epub 2020 Apr 4.

Department of Foundry and Welding, Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland.

The scratch test enables assessing the susceptibility of a material to the development of scratches and, being in some ways a measure of its abrasion resistance, allows extended knowledge in the field of material application usability, especially its machining capabilities. The aim of the study was to assess the resistance of a centrifugally formed AlSi12/SiC composite layer with a high share of reinforcing phase (V > 40%) to scratching with a diamond indenter. The microstructure and effect of the load applied to the diamond indenter on the scratch depth and susceptibility of the composite layer to the nucleation and propagation of cracks in hard and brittle SiC particles were analyzed. Read More

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http://dx.doi.org/10.3390/ma13071685DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178687PMC

Three-Dimensional Printing of Continuous Flax Fiber-Reinforced Thermoplastic Composites by Five-Axis Machine.

Materials (Basel) 2020 Apr 3;13(7). Epub 2020 Apr 3.

Kompetenzzentrum Holz GmbH, Altenberger Straße 69, 4040 Linz, Austria.

A method for printing continuous flax fiber-reinforced plastic (CFFRP) composite parts by five-axis three-dimensional (3D) printer, based on fused filament fabrication (FFF) technology, has been developed. FFF printed parts usually need supporting structures, have a stair step effect, and unfavorable mechanical properties. In order to address these deficiencies, continuous natural fiber prepreg filaments were first manufactured, followed by curved path planning for the model for generation of the G-code, and finally printed by a five-axis 3D printer. Read More

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http://dx.doi.org/10.3390/ma13071678DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178657PMC

Effect of Adhesion on Mechanical and Tribological Properties of Glass Fiber Composites, Based on Ultra-High Molecular Weight Polyethylene Powders with Various Initial Particle Sizes.

Materials (Basel) 2020 Apr 1;13(7). Epub 2020 Apr 1.

Faculty of Engineering, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway.

The aim of this study was to assess the effect of adhesion between the non-polar, ultra-high molecular weight polyethylene (UHMWPE) matrix and the glass fiber fillers of various lengths treated with the commercially available "KH-550" agent, on the mechanical and tribological properties of the UHMWPE-based composites. The motivation was to find the optimal compositions of the polymer composite, for the compression sintering manufacturing of lining plates for the protection of marine venders and construction vehicles, as well as transport equipment. It was shown that the initial powder size at equal molecular weight determined the distribution patterns of the glass fibers in the matrix, and, as a consequence, the mechanical and tribological properties of the composites. Read More

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http://dx.doi.org/10.3390/ma13071602DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178297PMC

Fabrication of TiB-Al1050 Composites with Improved Microstructural and Mechanical Properties by a Liquid Pressing Infiltration Process.

Materials (Basel) 2020 Mar 30;13(7). Epub 2020 Mar 30.

Composites Research Division, Korea Institute of Materials Science (KIMS), Changwon 51508, Korea.

This study was conducted on titanium diboride (TiB) reinforced Al metal matrix composites (MMCs) with improved properties using a TiB and aluminum (Al) 1050 alloy. Al composites reinforced with fine TiB at volume ratios of more than 60% were successfully fabricated via the liquid pressing infiltration (LPI) process, which can be used to apply gas pressure at a high temperature. The microstructure of the TiB-Al composite fabricated at 1000 °C with pressurization of 10 bar for 1 h showed that molten Al effectively infiltrated into the high volume-fraction TiB preform due to the improved wettability and external gas pressurization. Read More

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http://dx.doi.org/10.3390/ma13071588DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177706PMC

High-temperature Mechanical Properties and Their Influence Mechanisms of ZrC-Modified C-SiC Ceramic Matrix Composites up to 1600 °C.

Materials (Basel) 2020 Mar 30;13(7). Epub 2020 Mar 30.

State Key Laboratory of Structural Analyses for Industrial Equipment, Dalian University of Technology, Dalian 116024, China.

In order to understand the influence of the mechanisms of ZrC nanoparticles on the high-temperature mechanical properties of C-SiC ceramic matrix composites, the mechanical properties were measured from room temperature (RT) to 1600 °C under vacuum. The microstructures features were characterized by scanning electron microscopy. In comparison with the composites without ZrC nanoparticles, the ZrC-modified composite presented better mechanical properties at all temperatures, indicating that the mechanical properties could be improved by the ZrC nanoparticles. Read More

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http://dx.doi.org/10.3390/ma13071581DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177464PMC

Composite Sulfonated Polyether-Ether Ketone Membranes with SBA-15 for Electrochemical Energy Systems.

Materials (Basel) 2020 Mar 29;13(7). Epub 2020 Mar 29.

Centro de Investigación y Desarrollo Tecnológico en Electroquímica S.C., Sanfandila 76703, Mexico.

The aim of this work is the evaluation of a Sulfonated Poly Ether-Ether Ketone (S-PEEK) polymer modified by the addition of pure Santa Barbara Amorphous-15 (SBA-15, mesoporous silica) and SBA-15 previously impregnated with phosphotungstic acid (PWA) fillers (PWA/SBA-15) in order to prepare composite membranes as an alternative to conventional Nafion membranes. This component is intended to be used as an electrolyte in electrochemical energy systems such as hydrogen and methanol Proton Exchange Membrane Fuel Cell (PEMFC) and Electrochemical Hydrogen Pumping (EHP). The common requirements for all the applications are high proton conductivity, thermomechanical stability, and fuel and oxidant impermeability. Read More

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http://dx.doi.org/10.3390/ma13071570DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178128PMC

The Possibility of Interlocking Nail Fabrication from FFF 3D Printing PLA/PCL/HA Composites Coated by Local Silk Fibroin for Canine Bone Fracture Treatment.

Materials (Basel) 2020 Mar 28;13(7). Epub 2020 Mar 28.

Advanced Manufacturing Technology Research Center (AMTech), Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand.

The biomaterials polylactic acid (PLA), polycaprolactone (PCL), and hydroxyapatite (HA) were selected to fabricate composite filaments for 3D printing fused filament fabrication (FFF), which was used to fabricate a composite biomaterial for an interlocking nail for canine diaphyseal fractures instead of metal bioinert materials. Bioactive materials were used to increase biological activities and provide a high possibility for bone regeneration to eliminate the limitations of interlocking nails. HA was added to PLA and PCL granules in three ratios according to the percentage of HA: 0%, 5%, and 15% (PLA/PCL, PLA/PCL/5HA, and PLA/PCL/15HA, respectively), before the filaments were extruded. Read More

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http://dx.doi.org/10.3390/ma13071564DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177625PMC

Effect of Material and Process Variables on Characteristics of Nitridation-Induced Self-Formed Aluminum Matrix Composites-Part 1: Effect of Reinforcement Volume Fraction, Size, and Processing Temperatures.

Materials (Basel) 2020 Mar 13;13(6). Epub 2020 Mar 13.

School of Advanced Materials Engineering, Kookmin University, Seoul 02707, Korea.

This paper investigates the effect of the size and volume fraction of SiC, along with that of the processing temperature, upon the nitridation behavior of aluminum powder during the nitridation-induced self-formed aluminum composite (NISFAC) process. In this new composite manufacturing process, aluminum powder and ceramic reinforcement mixtures are heated in nitrogen gas, thus allowing the exothermic nitridation reaction to partially melt the aluminum powder in order to assist the composite densification and improve the wetting between the aluminum and the ceramic. The formation of a sufficient amount of molten aluminum is key to producing sound, pore-free aluminum matrix composites (AMCs); hence, the degree of nitridation is a key factor. Read More

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http://dx.doi.org/10.3390/ma13061309DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143127PMC

Laminated Wallboard Panels Made with Cellulose Nanofibrils as a Binder: Production and Properties.

Materials (Basel) 2020 Mar 13;13(6). Epub 2020 Mar 13.

Laboratory of Renewable Nanomaterials, School of Forest Resources, University of Maine, 5755 Nutting Hall, Orono, ME 04469, USA.

This study explored the development and characterization of laminated wallboard panels using renewable materials for building applications. The panels are based on cellulose nanofibrils (CNFs) as a binder and wood particles. Other additives included FiberLean (microfibrillated cellulose/calcium carbonate composite), starch and fire retardant (boric acid/borax). Read More

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http://dx.doi.org/10.3390/ma13061303DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7143567PMC

Effect of Material and Process Variables on Characteristics of Nitridation-Induced Self-Formed Aluminum Matrix Composites-Part 2: Effect of Nitrogen Flow Rates and Processing Temperatures.

Materials (Basel) 2020 Mar 8;13(5). Epub 2020 Mar 8.

School of Advanced Materials Engineering, Kookmin University, Seoul 02707, Korea.

The nitridation-induced self-formed aluminum matrix composite (NISFAC) process is based on the nitridation reaction, which can be significantly influenced by the characteristics of the starting materials (e.g., the chemical composition of the aluminum powder and the type, size, and volume fraction of the ceramic reinforcement) and the processing variables (e. Read More

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http://dx.doi.org/10.3390/ma13051213DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085030PMC

Establishment of Collagen: Hydroxyapatite/BMP-2 Mimetic Peptide Composites.

Materials (Basel) 2020 Mar 7;13(5). Epub 2020 Mar 7.

Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, 72076 Tübingen, Germany.

Extensive efforts were undertaken to develop suitable biomaterials for tissue engineering (TE) applications. To facilitate clinical approval processes and ensure the success of TE applications, bioinspired concepts are currently focused on. Working on bone tissue engineering, we describe in the present study a method for biofunctionalization of collagen/hydroxyapatite composites with BMP-2 mimetic peptides. Read More

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http://dx.doi.org/10.3390/ma13051203DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085073PMC

Synthesis and Electrochemical Properties of BiMoO/Carbon Anode for Lithium-Ion Battery Application.

Materials (Basel) 2020 Mar 4;13(5). Epub 2020 Mar 4.

Depatment of Chemical and Process Engineering, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford GU2 7XH, UK.

High capacity electrode materials are the key for high energy density Li-ion batteries (LIB) to meet the requirement of the increased driving range of electric vehicles. Here we report the synthesis of a novel anode material, BiMoO/palm-carbon composite, via a simple hydrothermal method. The composite shows higher reversible capacity and better cycling performance, compared to pure BiMoO. Read More

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http://dx.doi.org/10.3390/ma13051132DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7085012PMC

Precise Drilling of Holes in Alumina Ceramic (AlO) by Rotary Ultrasonic Drilling and its Parameter Optimization using MOGA-II.

Materials (Basel) 2020 Feb 27;13(5). Epub 2020 Feb 27.

Raytheon Chair for Systems Engineering (RCSE), Advanced Manufacturing Institute, King Saud University, Riyadh 11421, Saudi Arabia.

Alumina is an advanced ceramic with applications in dental and medical sciences. Since ceramics are hard and brittle, their conventional machining is expensive, arduous, and time-consuming. As rotary ultrasonic machining is among the most adequate and proficient processing techniques for brittle materials like ceramics. Read More

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http://dx.doi.org/10.3390/ma13051059DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084812PMC
February 2020

Carbon-Based Band Gap Engineering in the h-BN Analytical Modeling.

Materials (Basel) 2020 Feb 25;13(5). Epub 2020 Feb 25.

Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentska 2, 461 17 Liberec, Czech Republic.

The absence of a band gap in graphene is a hindrance to its application in electronic devices. Alternately, the complete replacement of carbon atoms with B and N atoms in graphene structures led to the formation of hexagonal boron nitride (h-BN) and caused the opening of its gap. Now, an exciting possibility is a partial substitution of C atoms with B and N atoms in the graphene structure, which caused the formation of a boron nitride composite with specified stoichiometry. Read More

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http://dx.doi.org/10.3390/ma13051026DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7084880PMC
February 2020

High Temperature Sensing and Detection for Cementitious Materials Using Manganese Violet Pigment.

Materials (Basel) 2020 Feb 22;13(4). Epub 2020 Feb 22.

Department of Civil Engineering, Inha University, Incheon 22212, Korea.

In recent years, advanced materials have attracted considerable interest in the field of temperature detection and sensing. This study examined the thermochromic properties of inorganic manganese violet (MV) with increasing temperature. According to the thermochromic test, the material was found to have reversible and irreversible color change properties. Read More

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http://dx.doi.org/10.3390/ma13040993DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078599PMC
February 2020

Synthesis of Silver-Coated Bioactive Nanocomposite Scaffolds Based on Grafted Beta-Glucan/Hydroxyapatite via Freeze-Drying Method: Anti-Microbial and Biocompatibility Evaluation for Bone Tissue Engineering.

Materials (Basel) 2020 Feb 21;13(4). Epub 2020 Feb 21.

Department of Biology, University of Hafr Al Batin, Hafar Al-batin 39524, Saudi Arabia.

Advancement and development in bone tissue engineering, particularly that of composite scaffolds, are of great importance for bone tissue engineering. We have synthesized polymeric matrix using biopolymer (β-glucan), acrylic acid, and nano-hydroxyapatite through free radical polymerization method. Bioactive nanocomposite scaffolds (BNSs) were fabricated using the freeze-drying method and Ag was coated by the dip-coating method. Read More

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http://dx.doi.org/10.3390/ma13040971DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078890PMC
February 2020

Ni/cerium Molybdenum Oxide Hydrate Microflakes Composite Coatings Electrodeposited From Choline Chloride: Ethylene Glycol Deep Eutectic Solvent.

Materials (Basel) 2020 Feb 19;13(4). Epub 2020 Feb 19.

Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, 50-370 Wrocław, Poland.

Cerium molybdenum oxide hydrate microflakes are codeposited with nickel from a deep eutectic solvent-based bath. During seven days of exposure in 0.05 M NaCl solution, the corrosion resistance of composite coating (Ni/CeMoOxide) is slightly reduced, due to the existence of some microcracks caused by large microflakes. Read More

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http://dx.doi.org/10.3390/ma13040924DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7078612PMC
February 2020

Energy Absorption Behavior of Al-SiC-Graphene Composite Foam under a High Strain Rate.

Materials (Basel) 2020 Feb 8;13(3). Epub 2020 Feb 8.

CSIR-Advanced Materials and Processes Research Institute, Bhopal 462026, MP, India.

The present work was addressed to the closed-cell aluminum (Al)-silicon carbide (SiC) particles (15 wt.%) with graphene (0.5 wt. Read More

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http://dx.doi.org/10.3390/ma13030783DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040625PMC
February 2020
2.651 Impact Factor

Material Design Methodology for Optimized Wear-Resistant Thermoplastic-Matrix Composites Based on Polyetheretherketone and Polyphenylene Sulfide.

Materials (Basel) 2020 Jan 22;13(3). Epub 2020 Jan 22.

Lab. of Mechanics of Polymer Composite Materials, Institute of Strength Physics and Materials Science SB RAS, 634055 Tomsk, Russia.

The main goal of this paper is to design and justify optimized compositions of thermoplastic-matrix wear-resistant composites based on polyetheretherketone (PEEK) and polyphenylene sulfide (PPS). Their mechanical and tribological properties have been specified in the form of bilateral and unilateral limits. For this purpose, a material design methodology has been developed. Read More

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http://dx.doi.org/10.3390/ma13030524DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040583PMC
January 2020

Soft Material-Enabled Electronics for Medicine, Healthcare, and Human-Machine Interfaces.

Materials (Basel) 2020 Jan 22;13(3). Epub 2020 Jan 22.

George W. Woodruff School of Mechanical Engineering, Institute for Electronics and Nanotechnology, Georgia Institute of Technology, Atlanta, GA 30332, USA.

Soft material-enabled electronics offer distinct advantages over conventional rigid and bulky devices for numerous wearable and implantable applications. Soft materials allow for seamless integration with skin and tissues due to the enhanced mechanical flexibility and stretchability. Wearable devices with multiple sensors offer continuous, real-time monitoring of biosignals and movements, which can be applied for rehabilitation and diagnostics, among other applications. Read More

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http://dx.doi.org/10.3390/ma13030517DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040651PMC
January 2020

Comparison of Mechanical and Barrier Properties of AlO/TiO/ZrO Layers in Oxide-Hydroxyapatite Sandwich Composite Coatings Deposited by Sol-Gel Method on Ti6Al7Nb Alloy.

Materials (Basel) 2020 Jan 21;13(3). Epub 2020 Jan 21.

Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, Studentská 1402/2, 460 01 Liberec 1, Czech Republic.

In this study, coatings of different oxides (TiO, AlO, ZrO) and hydroxyapatite (HAp) as well as sandwich composite hydroxyapatite with an oxides sublayer (oxide+HAp) were deposited on Ti6Al7Nb alloy using the sol-gel dip-coating method. The coatings were characterized in terms of morphology (optical microscope), surface topography (AFM), thickness (ellipsometry), and crystal structure (XRD/GIXRD). The mechanical properties of the coatings-hardness, Young's modulus, and adhesion to the substrate-were examined using nanoindentation and scratch tests. Read More

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http://dx.doi.org/10.3390/ma13030502DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040737PMC
January 2020

Repeated Thermal Shock Behavior of ZrB-SiC-Graphite Composite under Pre-Stress in Air and Ar Atmospheres.

Materials (Basel) 2020 Jan 13;13(2). Epub 2020 Jan 13.

College of Aerospace Engineering, Chongqing University, Chongqing 400044, China.

The thermo-chemo-mechanical coupling on the thermal shock resistance of 20 vol%-ZrB-15 vol%-SiC-graphite composite is investigated with the use of a self-developed material testing system. In each test, a specimen under prescribed constant tensile pre-stress ( = 0, 10, 20 and 30 MPa) was subjected to 60 cycles of thermal shock. In each cycle, the specimen was heated from room temperature to 2000 °C within 5 s in an air atmosphere or an Ar atmosphere. Read More

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http://dx.doi.org/10.3390/ma13020370DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7013407PMC
January 2020

Increasing Wear Resistance of UHMWPE by Loading Enforcing Carbon Fibers: Effect of Irreversible and Elastic Deformation, Friction Heating, and Filler Size.

Materials (Basel) 2020 Jan 11;13(2). Epub 2020 Jan 11.

Lab. of Mechanics of Polymer Composite Materials, Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 Russia.

The aim of the study was to develop a design methodology for the UltraHigh Molecular Weight Polyethylene (UHMWPE)-based composites used in friction units. To achieve this, stress-strain analysis was done using computer simulation of the triboloading processes. In addition, the effects of carbon fiber size used as reinforcing fillers on formation of the subsurface layer structures at the tribological contacts as well as composite wear resistance were evaluated. Read More

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http://dx.doi.org/10.3390/ma13020338DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7013855PMC
January 2020

Synthesis and Characterization of PLA-Micro-structured Hydroxyapatite Composite Films.

Materials (Basel) 2020 Jan 8;13(2). Epub 2020 Jan 8.

"Carol Davila" University of Medicine and Pharmacy, Prosthetics Technology and Dental Materials Department, 37, Dionisie Lupu Street, District 1, 020022 Bucharest, Romania.

This article presents a facile synthesis method used to obtain new composite films based on polylactic acid and micro-structured hydroxyapatite particles. The composite films were synthesized starting from a polymeric solution in chloroform (12 wt.%) in which various concentrations of hydroxyapatite (1, 2, and 4 wt. Read More

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http://dx.doi.org/10.3390/ma13020274DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7014116PMC
January 2020

Preparation and Characterization of Alumina HDPE Composites.

Materials (Basel) 2020 Jan 6;13(1). Epub 2020 Jan 6.

Centre for Advanced Materials, Qatar University, Doha 2713, Qatar.

In this study, effects of two different types of porous alumina nanoparticles have been incorporated into high-density polyethylene (HDPE) to study their impact on the properties of the HDPE composite. The dispersion of fillers in the HDPE matrix was evaluated by scanning electron microscopy (SEM). Differential scanning calorimetry (DSC) and thermogravimetric analyzer (TGA) integrated with Fourier transform infrared spectroscopy (FTIR) were applied to investigate the calorimetric behavior and thermal stability and to analyze the polymer decomposition, respectively. Read More

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http://dx.doi.org/10.3390/ma13010250DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981892PMC
January 2020

Reducing Yield Asymmetry between Tension and Compression by Fabricating ZK60/WE43 Bimetal Composites.

Materials (Basel) 2020 Jan 6;13(1). Epub 2020 Jan 6.

Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada.

In this study ZK60/WE43 bimetal composite rods were manufactured by a special method of hot diffusion and co-extrusion. Interface microstructure, deformation mechanism, and yield asymmetry between tension and compression for the composite rods were systematically investigated. It was observed that the salient deformation mechanism of the ZK60 constituent was {10-12}<-1011> extension twinning in compression and prismatic slip in tension, and different deformation modes resulted in yield asymmetry between tension and compression. Read More

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http://dx.doi.org/10.3390/ma13010249DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981864PMC
January 2020

Effect of Graphene Carbon Nitride on Ultraviolet-Curing Coatings.

Materials (Basel) 2019 Dec 31;13(1). Epub 2019 Dec 31.

International Academy of Optoeletronics at Zhaoqing, South China Normal University, Guangzhou 526238, China.

Graphene carbon nitride (g-C3N4) was successfully prepared by semi-closed pyrolysis and then incorporated into the ultraviolet (UV)-curing system to synthesize different specimens of g-CN-hybridized UV-curing (g-CN/UV) coatings. The apparent appearance and dispersity g-CN were characterized through X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The influence of the curing speed and mechanical properties was also tested. Read More

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http://dx.doi.org/10.3390/ma13010153DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981393PMC
December 2019

Enhancement of Mechanical Properties of Flax-Epoxy Composite with Carbon Fibre Hybridisation for Lightweight Applications.

Materials (Basel) 2019 Dec 25;13(1). Epub 2019 Dec 25.

Center for Biocomposites and Biomaterials Processing, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, ON M5S 3B3, Canada.

The effect of unidirectional (UD) carbon fibre hybridisation on the tensile properties of flax fibre epoxy composite was investigated. Composites containing different fibre ply orientations were fabricated using vacuum infusion with a symmetrical ply structure of 0/+45/-45/90/90/-45/+45/0. Tensile tests were performed to characterise the tensile performance of plain flax/epoxy, carbon/flax/epoxy, and plain carbon/epoxy composite laminates. Read More

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http://dx.doi.org/10.3390/ma13010109DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981686PMC
December 2019

Dimensionally and environmentally ultra-stable polymer composites reinforced with carbon fibres.

Nat Mater 2020 Mar 23;19(3):317-322. Epub 2019 Dec 23.

Advanced Technology Institute, Department of Electrical and Electronic Engineering, University of Surrey, Guildford, UK.

The quest to develop materials that enable the manufacture of dimensionally ultra-stable structures for critical-dimension components in spacecraft has led to much research over many decades and the evolution of carbon fibre reinforced polymer materials. This has resulted in structural designs that feature a near-zero coefficient of thermal expansion. However, the dimensional instabilities that result from moisture ingression and release remain the fundamental vulnerability of the matrix, which restricts many applications. Read More

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http://dx.doi.org/10.1038/s41563-019-0565-3DOI Listing

Processability of Atypical WC-Co Composite Feedstock by Laser Powder-Bed Fusion.

Materials (Basel) 2019 Dec 20;13(1). Epub 2019 Dec 20.

Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Nottingham NG 7 2RD, UK.

Processing of tool materials for cutting applications presents challenges in additive manufacturing (AM). Processes must be carefully managed in order to promote the formation of favourable high-integrity 'builds'. In this study, for the first time, a satelliting process is used to prepare a WC-Co (12 wt. Read More

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http://dx.doi.org/10.3390/ma13010050DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982160PMC
December 2019

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization.

Materials (Basel) 2019 Dec 18;13(1). Epub 2019 Dec 18.

Department of Fibre and Textile Technology, University of Agriculture, Faisalabad 38000, Pakistan.

This present study proposed a successful one pot synthesis of zinc oxide nanoparticles (ZnO NPs) and their optimisation for photocatalytic applications. Zinc chloride (ZnCl) and sodium hydroxide (NaOH) were selected as chemical reagents for the proposed study. The design of this experiment was based on the reagents' amounts and the ultrasonic irradiations' time. Read More

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http://dx.doi.org/10.3390/ma13010014DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6981647PMC
December 2019

Optimal Design of Plated/Shell Structures under Flutter Constraints-A Literature Review.

Materials (Basel) 2019 Dec 15;12(24). Epub 2019 Dec 15.

Institute of Machine Design, Cracow University of Technology, 31-864 Cracow, Poland.

Aeroelastic optimization has become an indispensable component in the evaluation of divergence and flutter characteristics for plated/shell structures. The present paper intends to review the fundamental trends and dominant approaches in the optimal design of engineering constructions. A special attention is focused on the formulation of objective functions/functional and the definition of physical (material) variables, particularly in view of composite materials understood in the broader as not only multilayered laminates but also as sandwich structures, nanocomposites, functionally graded materials, and materials with piezoelectric actuators/sensors. Read More

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http://dx.doi.org/10.3390/ma12244215DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947328PMC
December 2019

Thermoplastic moulding of regenerated silk.

Nat Mater 2020 Jan 16;19(1):102-108. Epub 2019 Dec 16.

Department of Biomedical Engineering, Tufts University, Medford, MA, USA.

Early insights into the unique structure and properties of native silk suggested that β-sheet nanocrystallites in silk would degrade prior to melting when subjected to thermal processing. Since then, canonical approaches for fabricating silk-based materials typically involve solution-derived processing methods, which have inherent limitations with respect to silk protein solubility and stability in solution, and time and cost efficiency. Here we report a thermal processing method for the direct solid-state moulding of regenerated silk into bulk 'parts' or devices with tunable mechanical properties. Read More

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http://dx.doi.org/10.1038/s41563-019-0560-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6986341PMC
January 2020

Structural, Compositional, and Mechanical Characterization of WCrFe Layers Relevant to Nuclear Fusion, Obtained with TVA Technology.

Materials (Basel) 2019 Dec 6;12(24). Epub 2019 Dec 6.

Low Temperature Plasma and Plasma Physics and Nuclear Fusion Departments, National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania.

Reduced activation ferritic and martensitic steel like EUROFER (9Cr-1W) are considered as potential structural materials for the first wall of the future next-generation DEMOnstration Power Station (DEMO) fusion reactor and as a reference material for the International Thermonuclear Experimental Reactor (ITER) test blanket module. The primary motivation of this work is to study the re-deposition of the main constituent materials of EUROFER, namely tungsten (W), iron (Fe), and chromium (Cr), in a DEMO type reactor by producing and analyzing complex WCrFe layers. The composite layers were produced in laboratory using the thermionic vacuum arc (TVA) method, and the morphology, crystalline structure, elemental composition, and mechanical properties were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-X-ray fluorescence (micro-XRF), and glow discharge optical emission spectrometry (GDOES), as well as nanoindentation and tribology measurements. Read More

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http://dx.doi.org/10.3390/ma12244072DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6947243PMC
December 2019

Sensor-Assisted Assessment of the Tribological Behavioral Patterns of Al-SiCp Composites under Various Environmental Temperature Conditions.

Materials (Basel) 2019 Dec 2;12(23). Epub 2019 Dec 2.

Key Laboratory of Digital Signal and Image Processing of Guangdong Province, Department of Electronic Engineering, College of Engineering, Shantou University, Shantou 515063, Guangdong, China.

Currently, the use of sensors and supporting technologies has become indispensable in the assessment of tribological behavioral patterns of composites. Furthermore, the current investigation focused on the assessment of the tribological behavior of the Al-SiCp composite for high-temperature applications. Moreover, the Al-SiCp composite was fabricated by adapting the liquid metallurgy route with varying weight percentages of SiC (x = 3, 6, and 9). Read More

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http://dx.doi.org/10.3390/ma12234004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926865PMC
December 2019
2.651 Impact Factor

Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-CN Composite for Rhodamine B (RhB) Degradation.

Materials (Basel) 2019 Nov 28;12(23). Epub 2019 Nov 28.

Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China.

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-CN composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NHCl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-CN is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. Read More

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http://dx.doi.org/10.3390/ma12233948DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926513PMC
November 2019

Densification Mechanism for the Precursor of AFS under Different Rolling Temperatures.

Materials (Basel) 2019 Nov 27;12(23). Epub 2019 Nov 27.

School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.

The effect of rolling temperature on the precursor of aluminum foam sandwich (AFS) prepared by powder metallurgy through Pack Rolling method is investigated in this work. The cross-section along rolling direction of the precursors was observed. It was found that periodic corrugated morphology with micro-cracks on the composite interface as well as cracks and micro-holes among core powder particles emerged abundantly at room temperature rolling. Read More

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http://dx.doi.org/10.3390/ma12233933DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6926804PMC
November 2019

Organically Modified Nanoclay Filled Thin-Film Nanocomposite Membranes for Reverse Osmosis Application.

Materials (Basel) 2019 Nov 19;12(22). Epub 2019 Nov 19.

Gas processing Center, Qatar University, P.O. Box 2713 Doha, Qatar.

This study validates, for the first time, the effectiveness of two nanoclays, that is, cloisite (CS)-15A and montmorillonite (MNT) at the polyamide (PA) active layer in the reverse osmosis (RO) membrane. Cloisite-15A is natural montmorillonite modified with dimethyl dihydrogenated tallow quaternary ammonium salt. Thin-film composite (TFC) membranes were fabricated by the interfacial polymerization (IP) process between the trimesoylchloride (TMC)-n-hexane solution and m-phenylenediamine (MPD)-aqueous solution; the IP process took place on a polysulfone support sheet. Read More

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http://dx.doi.org/10.3390/ma12223803DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888354PMC
November 2019

Parametric Study of Flexural Strengthening of Concrete Beams with Prestressed Hybrid Reinforced Polymer.

Materials (Basel) 2019 Nov 18;12(22). Epub 2019 Nov 18.

College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.

The strengthening method of using hybrid fiber reinforced polymer is an effective way to increase the strengthening efficiency and lower the cost. This paper focuses on simulating the flexural behavior of reinforced concrete beam strengthened by prestressed C/GFRP (Carbon-Glass hybrid Fiber Reinforced Polymer) with different hybrid ratios and prestress levels. An elastoplastic damage constitution is used to simulate the mechanical behavior of concrete. Read More

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http://dx.doi.org/10.3390/ma12223790DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888612PMC
November 2019

Strain-Hardening and High-Ductile Behavior of Alkali-Activated Slag-Based Composites with Added Zirconia Silica Fume.

Materials (Basel) 2019 Oct 27;12(21). Epub 2019 Oct 27.

School of Architecture, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186, Korea.

This paper presents an experimental study on the effects of zirconia silica fume on the composite properties and cracking patterns of fiber-reinforced alkali-activated slag-based composites. Four mixtures were prepared with added zirconia silica fume and varying water-to-binder ratio. Polyethylene fiber was used as a reinforcing fiber for all the mixtures at a volumetric ratio of 2. Read More

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http://dx.doi.org/10.3390/ma12213523DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862578PMC
October 2019

Special Issue: Materials for Nuclear Waste Immobilization.

Materials (Basel) 2019 Nov 3;12(21). Epub 2019 Nov 3.

Immobilisation Science Laboratory, Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, UK.

Nuclear energy is clean, reliable, and competitive with many useful applications, among which power generation is the most important as it can gradually replace fossil fuels and avoid massive pollution of environment. A by-product resulting from utilization of nuclear energy in both power generation and other applications, such as in medicine, industry, agriculture, and research, is nuclear waste. Safe and effective management of nuclear waste is crucial to ensure sustainable utilization of nuclear energy. Read More

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http://dx.doi.org/10.3390/ma12213611DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862468PMC
November 2019

The Effect of Shear Deformation on Permeability of 2.5D Woven Preform.

Materials (Basel) 2019 Oct 31;12(21). Epub 2019 Oct 31.

National Key Laboratory of Science and Technology on Advanced Composite in Special Environments, Harbin Institute of Technology, Harbin 150080, China.

The accurate prediction of the permeability is the key to optimizing the molding process of fiber reinforced composites, thus to improve the composite quality, and reduce the material and labor costs in the manufacturing process. In this paper, the permeability of 2.5D woven preform with shear deformation was studied by experiments and numerical simulations. Read More

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http://dx.doi.org/10.3390/ma12213594DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862722PMC
October 2019

Fabrication of Metal Matrix Composite by Laser Metal Deposition-A New Process Approach by Direct Dry Injection of Nanopowders.

Materials (Basel) 2019 Oct 31;12(21). Epub 2019 Oct 31.

Empa-Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Advanced Materials Processing, 3602 Thun, Switzerland.

Laser Metal Deposition (LMD) offers new perspectives for the fabrication of metal matrix nanocomposites (MMnCs). Current methods to produce MMnCs by LMD systematically involve the premixing of the nanopowders and the micropowders or require in-situ strategies, thereby restricting the possibilities to adjust the nature, content and location of the nano-reinforcement during printing. The objective of this study is to overcome such restrictions and propose a new process approach by direct injection of nanoparticles into a metallic matrix. Read More

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http://dx.doi.org/10.3390/ma12213584DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862596PMC
October 2019