45 results match your criteria filaments woven

Creep Behaviour of Recycled Poly(ethylene) Terephthalate Non-Woven Geotextiles.

Polymers (Basel) 2021 Feb 28;13(5). Epub 2021 Feb 28.

Eletrobras, Furnas Centrais Elétricas S.A., Aparecida de Goiânia 74923-650, Brazil.

At the beginning of this century, due to well-established Brazilian recycling processes, geosynthetics' manufacturers started to use recycled poly(ethylene) terephthalate (PET) yarns/filaments (from PET bottles) in geotextile production. Despite the fact that recycled products cannot act as reinforcement functions, geosynthetics are constantly under sustained tensile load and experiences evolutions of the axial strain (creep behaviour). Thus, this study aims to assess the influence of the structure of (needle-punched) non-woven geotextiles manufactured using recycled PET yarns on their creep behaviour. Read More

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February 2021

Protean Regulation of Leukocyte Function by Nuclear Lamins.

Trends Immunol 2021 Apr 27;42(4):323-335. Epub 2021 Feb 27.

Molecular Signaling Section, Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases (NIAID), Rockville, MD 20892, USA. Electronic address:

The leukocyte nucleus must be sufficiently elastic to squeeze through tissue barriers during migration, but not so collapsible as to risk damaging chromatin. The proper balance is struck in part by the composition of the nuclear lamina, a flexible meshwork composed mainly of intermediate filaments woven from type A and type B lamin proteins, that is located subjacent to the inner nuclear membrane. There is now increasing evidence that, in addition to influencing nuclear shape and stiffness and cell migration, lamins and lamin-interacting proteins may also interact functionally with chromatin to influence leukocyte gene expression, differentiation, and effector function, including T cell differentiation, B cell somatic hypermutation, and the formation of neutrophil extracellular traps (NETosis). Read More

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Development of photoluminescent, superhydrophobic, and electrically conductive cotton fibres.

Luminescence 2021 Jun 16;36(4):964-976. Epub 2021 Feb 16.

Department of Chemistry, Faculty of Applied Science, Umm-Al-Qura University, Makkah, Saudi Arabia.

A simple method for the preparation of multifunctional nanocomposite was developed towards the production of water-repellent, electrically conductive, and photoluminescent film onto cotton fibres. The nanocomposite was composed of lanthanide-doped strontium aluminium oxide and silicon rubber dispersed in petroleum ether. The electrically conductive fabric was woven from nickel strips twisted with cotton filaments as core yarns, which were wrapped with pure cotton yarns. Read More

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Chitosan Woven Meshes: Influence of Threads Configuration on Mechanical, Morphological, and Physiological Properties.

Polymers (Basel) 2020 Dec 25;13(1). Epub 2020 Dec 25.

Department of Materials Engineering, Federal University of Campina Grande, Campina Grande, PB 58429-900, Brazil.

This study aimed to develop meshes from the weaving of mono- and multifilament wet-spun chitosan (CS), for possible biomedical applications. In the wet-spinning process, CS solution (4% /) was extruded in a coagulation bath containing 70% sodium hydroxide solution (0.5 M), and 30% methanol was used. Read More

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December 2020

Microfiber Release to Water, Via Laundering, and to Air, via Everyday Use: A Comparison between Polyester Clothing with Differing Textile Parameters.

Environ Sci Technol 2020 03 9;54(6):3288-3296. Epub 2020 Mar 9.

School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, Devon PL4 8AA, U.K.

Textiles are one of the major sources of microplastic pollution to aquatic environments and have also been reported in dry and wet atmospheric deposition. There is still a lack of information on the direct release of microfibers from garments to the air and on the influence of textile characteristics including structure, type of yarn, and twist. The present study examines microfiber emissions directly to the air and to water as a consequence of laundering. Read More

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Stress, strain and deformation of poly-lactic acid filament deposited onto polyethylene terephthalate woven fabric through 3D printing process.

Sci Rep 2019 Oct 4;9(1):14333. Epub 2019 Oct 4.

Textile Materials Technology, Department of Textile Technology, Faculty of Textiles, Engineering and Business, University of Borås, Borås, 50190, Sweden.

Although direct deposition of polymeric materials onto textiles through 3D printing is a great technique used more and more to develop smart textiles, one of the main challenges is to demonstrate equal or better mechanical resistance, durability and comfort than those of the textile substrates before deposition process. This article focuses on studying the impact of the textile properties and printing platform temperature on the tensile and deformations of non-conductive and conductive poly lactic acid (PLA) filaments deposited onto polyethylene terephthalate (PET) textiles through 3D printing process and optimizing them using theoretical and statistical models. The results demonstrate that the deposition process affects the tensile properties of the printed textile in comparison with the ones of the textiles. Read More

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October 2019

Fabric Composites Reinforced with Thermally Bonded and Irregularly Aligned Filaments: Preparation and Puncture Resistant Performance.

Polymers (Basel) 2019 Apr 17;11(4). Epub 2019 Apr 17.

Department of Medical Research, China Medical University Hospital, China Medical University, Taichung City 40402, Taiwan.

This study proposes fabric composites with improved static and dynamic puncture via increasing a friction force to restrain the slide of filaments as well as the compression and abrasion between the fibers and the puncture probe. The the bi-layered shell layers of composite fabrics are composed of aramid staple fibers and nylon staple fibers and a layer of low-melting-point polyester (LPET). The nonwoven layer consisting of recycled aramid and nylon staple fibers provides a shear effect to dissipate part of the puncture energy. Read More

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Bending Properties of Zigzag-Shaped 3D Woven Spacer Composites: Experiment and FEM Simulation.

Materials (Basel) 2019 Apr 1;12(7). Epub 2019 Apr 1.

School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.

Conventionally laminated spacer composites are extensively applied in many fields owing to their light weight. However, their impact resistance, interlaminar strength, and integrity are poor. In order to overcome these flaws, the zigzag-shaped 3D woven spacer composites were rationally designed. Read More

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Electro-spun PLA-PEG-yarns for tissue engineering applications.

Biomed Tech (Berl) 2018 Jun;63(3):231-243

Department of Biohybrid and Medical Textiles (BioTex) at Institut fuer Textiltechnik and AME-Helmholtz Institute for Biomedical Engineering, Forckenbeckstr. 55, 52074 Aachen, Germany.

Electro-spinning is widely used in tissue-engineered applications mostly in form of non-woven structures. The development of e-spun yarn opens the door for textile fabrics which combine the micro to nanoscale dimension of electro-spun filaments with three-dimensional (3D) drapable textile fabrics. Therefore, the aim of the study was the implementation of a process for electro-spun yarns. Read More

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Silk fibroin-based woven endovascular prosthesis with heparin surface modification.

J Mater Sci Mater Med 2018 Apr 12;29(4):46. Epub 2018 Apr 12.

National Engineering Laboratory for Modern Silk, College of Textile and Clothing Engineering, Soochow University, 215123, Suzhou, China.

A novel seamless silk fibroin-based endovascular prosthesis (SFEPs) with bifurcated woven structure and anticoagulant function for the improvement of patency is described. The SFEPs were prepared from silk fibroin (SF) and polyester filaments using an installed weaving machine. The production processing parameters were optimized using orthogonal design methods. Read More

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Design of a wearable and shape-memory fibriform sensor for the detection of multimodal deformation.

Nanoscale 2017 Dec;10(1):118-123

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P. R. China.

A wearable and shape-memory strain sensor with a coaxial configuration is designed, comprising a thermoplastic polyurethane fiber as the core support, well-aligned and interconnected carbon nanotubes (CNTs) as conductive filaments, and polypyrrole (PPy) coating as the cladding layer. In this design, the stress relaxation between CNTs is well confined by the outer PPy cladding layer, which endows the fibriform sensor with good reliability and repeatability. The microcracks generated when the coaxial fiber is under strain guarantee the superior sensitivity of this fibriform sensor with a gauge factor of 12 at 0. Read More

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December 2017

Noncontact conductivity and dielectric measurement for high throughput roll-to-roll nanomanufacturing.

Sci Rep 2015 Nov 23;5:17019. Epub 2015 Nov 23.

Center for Nanoscale Science and Technology, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 USA.

Advances in roll-to-roll processing of graphene and carbon nanotubes have at last led to the continuous production of high-quality coatings and filaments, ushering in a wave of applications for flexible and wearable electronics, woven fabrics, and wires. These applications often require specific electrical properties, and hence precise control over material micro- and nanostructure. While such control can be achieved, in principle, by closed-loop processing methods, there are relatively few noncontact and nondestructive options for quantifying the electrical properties of materials on a moving web at the speed required in modern nanomanufacturing. Read More

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November 2015

Regenerative potential of human schneiderian membrane: progenitor cells and epithelial-mesenchymal transition.

Anat Rec (Hoboken) 2015 Dec 30;298(12):2132-40. Epub 2015 Oct 30.

Division of Anatomy, Faculty of Dental Medicine, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.

An innate osteogenic potential of the Schneiderian membrane (SM) is progressively assessed in studies ranging from non-human species to human subjects. It has relevance for endosteal placement and osseointegration. Nestin-expressing osteogenic progenitor cells are allegedly involved in bone formation and remodelling. Read More

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December 2015

Shaping the skin: the interplay of mesoscale geometry and corneocyte swelling.

Phys Rev Lett 2014 Jan 24;112(3):038102. Epub 2014 Jan 24.

Institut für Theoretische Physik, Universität Tübingen, 72076 Tübingen, Germany.

The stratum corneum, the outer layer of mammalian skin, provides a remarkable barrier to the external environment, yet it has highly variable permeability properties where it actively mediates between inside and out. On prolonged exposure to water, swelling of the corneocytes (skin cells composed of keratin intermediate filaments) is the key process by which the stratum corneum controls permeability and mechanics. As for many biological systems with intricate function, the mesoscale geometry is optimized to provide functionality from basic physical principles. Read More

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January 2014

A biomimetic approach for designing stent-graft structures: Caterpillar cuticle as design model.

J Mech Behav Biomed Mater 2014 Feb 25;30:16-29. Epub 2013 Oct 25.

Australian Future Fibres Research and Innovation Centre, Institute for Frontier Materials, Deakin University, Geelong, VIC 3216, Australia; Ministry of Education Key Laboratory for Textile Fibers and Products, Wuhan Textile University, Wuhan 430073, China. Electronic address:

Stent-graft (SG) induced biomechanical mismatch at the aortic repair site forms the major reason behind postoperative hemodynamic complications. These complications arise from mismatched radial compliance and stiffness property of repair device relative to native aortic mechanics. The inability of an exoskeleton SG design (an externally stented rigid polyester graft) to achieve optimum balance between structural robustness and flexibility constrains its biomechanical performance limits. Read More

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February 2014

Mechanical evaluation and cell response of woven polyetheretherketone scaffolds.

J Biomed Mater Res A 2012 Dec 26;100(12):3326-31. Epub 2012 Jun 26.

CSIRO Materials Science and Engineering, Normanby Road, Clayton, Australia 3168.

Polyetheretherketone (PEEK) is a high performance polymer, with high melting temperature and high resistance to wear. PEEK biomedical devices are typically manufactured to produce nonflexible structures. In this study, we fabricated flexible PEEK scaffolds from multifilament and monofilament yarns, using weaving technologies. Read More

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December 2012

Intra-operative fenestration of stent grafts: a note of caution based upon preliminary in vitro observations.

J Long Term Eff Med Implants 2011 ;21(3):251-60

Key Laboratory of Textile Science and Technology of Ministry of Education and College of Textiles, Donghua University, Shanghai, PR. China.

Intra-operative fenestrations of stent grafts make more frail and elderly patients amenable to endovascular surgery but require further assessment of the viability of currently used experimental techniques. Four types of polyester fabrics currently employed in stent grafts were exposed in vitro to various protocols of fenestration: cutting, trocaring, and cantering. The resulting fenestrations were examined by gross observation, light microscopy, and scanning electron microscopy. Read More

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[The mucus: a medium of life].

Gynecol Obstet Fertil 2012 Jan 22;40(1):19-23. Epub 2011 Oct 22.

Laboratoire de biologie de la reproduction, groupement hospitalier Est, 59, boulevard Pinel, 69677 cedex Bron, France.

Objectives: To investigate whether mucus, with its complex structure and specific functional properties, is a medium for life?

Patients And Methods: We compared cervical and nasal mucus samples collected from 45 ovulatory women consulting for sterility and 5 menopausal women respectively. We analyzed the physicochemical and functional characteristics. We also performed 266 sperm penetrability tests. Read More

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January 2012

The evolution of a capacity to build supra-cellular ropes enabled filamentous cyanobacteria to colonize highly erodible substrates.

PLoS One 2009 Nov 17;4(11):e7801. Epub 2009 Nov 17.

School of Life Sciences, Arizona State University, Tempe, Arizona, USA.

Background: Several motile, filamentous cyanobacteria display the ability to self-assemble into tightly woven or twisted groups of filaments that form macroscopic yarns or ropes, and that are often centimeters long and 50-200 microm in diameter. Traditionally, this trait has been the basis for taxonomic definition of several genera, notably Microcoleus and Hydrocoleum, but the trait has not been associated with any plausible function.

Method And Findings: Through the use of phylogenetic reconstruction, we demonstrate that pedigreed, rope-building cyanobacteria from various habitats do not form a monophyletic group. Read More

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November 2009

Prediction of porcine blastocyst formation using morphological, kinetic, and amino acid depletion and appearance criteria determined during the early cleavage of in vitro-produced embryos.

Biol Reprod 2007 Nov 25;77(5):765-79. Epub 2007 Jul 25.

Department of Biology, University of York, York YO10 5YW, United Kingdom.

The determination for early cleavage-stage embryos of noninvasive morphologic and metabolic criteria that are predictive of blastocyst development and/or full-term viability remains an important research target. We describe the derivation of a logistic regression model that predicts the probability of porcine blastocyst formation in vitro. Pig zygotes, derived by in vitro maturation and fertilization of slaughterhouse oocytes, were cultured in NCSU-23 medium that was supplemented with a mixture of 20 amino acids (NCSU-23(aa)). Read More

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November 2007

Characterization of arachnoidal cells cultured on three-dimensional nonwoven PET matrix.

Tissue Eng 2007 Jun;13(6):1269-79

Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, USA.

Purpose: To culture physiologically functional primary arachnoidal cells on a suitable polymer substrate for an in-vitro model of the cerebrospinal fluid outflow pathway.

Methods: Primary cultures of arachnoidal cells were prepared within 24 hours post-mortem from brain tissue obtained from human cadavers at autopsy. Arachnoidal cells were characterized using immunocytochemistry and seeded onto needle punched non-woven poly(ethylene terephthalate)(PET) scaffolds. Read More

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Coated textiles in the treatment of atopic dermatitis.

Curr Probl Dermatol 2006 ;33:144-51

Allergy Unit, Department of Dermatology, University Hospital of Zürich, Switzerland.

Atopic dermatitis (AD) is a chronic inflammatory skin disease with increasing prevalence over the last few decades. Various factors are known to aggravate the disease. In particular, wool and synthetic fabrics with harsh textile fibres, aggressive detergents and climatic factors may exacerbate AD. Read More

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October 2006

Silver stainings distinguish Lewy bodies and glial cytoplasmic inclusions: comparison between Gallyas-Braak and Campbell-Switzer methods.

Acta Neuropathol 2005 Sep 8;110(3):255-60. Epub 2005 Jul 8.

Department of Neuropathology, Tokyo Metropolitan Institute for Neuroscience, 2-6 Musashi-dai, Fuchu, 183-8526 Tokyo, Japan.

Lewy bodies (LBs) of idiopathic Parkinson's disease and glial cytoplasmic inclusions (GCIs) of multiple system atrophy are pathological deposits both composed of phosphorylated alpha-synuclein woven into different filaments. Although both LBs and GCIs are considered to be hallmarks for each independent synucleinopathy, until now they could not be clearly distinguished on the basis of their biochemical or immunohistochemical features. We have examined possible differences in their argyrophilic features and their relation to synuclein-like or ubiquitin-like immunoreactivity (IR). Read More

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September 2005

Novel fabricated matrix via electrospinning for tissue engineering.

J Biomed Mater Res B Appl Biomater 2005 Jan;72(1):117-24

Department of Textile Engineering, Chonbuk National University, Chonju, 561-756 South Korea.

Electric field-driven fiber formation (electrospinning) is developing into a practical means for preparing novel porous filament with unusual structures and affordable mechanical properties. Polycaprolactone (PCL) was dissolved in solvent mixtures of methylene chloride/N,N-dimethyl formamide with ratios of 100/0, 75/25, and 50/50 (v/v) for electrospinning. The filament was formed by coagulation of the spinning solution following the well-known principle of phase separation in polymer solutions valid in other wet shaping processes. Read More

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January 2005

Biocompatibility studies of the Anaconda stent-graft and observations of nitinol corrosion resistance.

J Endovasc Ther 2004 Aug;11(4):385-403

Department of Surgery, Laval University, and Quebec Biomaterials Institute, St-François d'Assise Hospital, CHUQ, Quebec, QC, Canada.

Purpose: To validate the deployment, in vivo performance, biostability, and healing capacity of the Anaconda self-expanding endoprosthesis in a canine aortic aneurysm model.

Methods: Aneurysms were surgically created in 12 dogs by sewing a woven polyester patch onto the anterior side of the thoracic or abdominal aorta. Anaconda prostheses were implanted transfemorally for prescheduled periods (1 or 3 months). Read More

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High-resolution AFM imaging of intact and fractured trabecular bone.

Bone 2004 Jul;35(1):4-10

Department of Physics, University of California, Santa Barbara 93106, USA.

Nanoscale structural analyses of biomineralized materials can frequently help elucidate important structure-function relationships in these complex organic-inorganic composites. Atomic force microscope (AFM) imaging of the exterior surface of trabecular bone reveals a densely woven structure of collagen fibrils, banded with a 67-nm periodicity, and densely packed mineral plates. The mineral plates on the collagen fibrils overlap and exhibit a large range of plate diameters from 30 to 200 nm. Read More

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Improved biomechanical resistance using an expanded polytetrafluoroethylene composite-structure prosthesis.

World J Surg 2004 May 19;28(5):461-5. Epub 2004 Apr 19.

Department of Surgery, Faculty of Medicine, Alcalá University, Ctra N-II, Km 33.600, 28871 Alcalá de Henares, Madrid, Spain.

We designed a composite-structure (laminar-reticular) prosthesis using expanded polytetrafluoroethylene (ePTFE) as the biomaterial in an attempt to improve the biomechanical resistance of the same biomaterial in the form of a single lamina. Defects (7 x 5 cm) were created in the abdominal wall of male white New Zealand rabbits (n = 24). The defects, which comprised all the wall layers except the skin, were then repaired with one of two types of ePTFE prosthesis. Read More

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[Synthetic suburethral sling in the treatment of stress urinary incontinence in women].

Prog Urol 2003 Sep;13(4):636-47

Clinique Urologique, Hôpital Bichat, 46, rue Henri Huchard, 75018 Paris.

Unlabelled: Since the marketing and success of the TVT technique, other products have been released onto the suburethral sling market. These products can be classified according to four main criteria: TAPE: The material used in every case is polypropylene, in the form of woven monofilaments (TVT, Sparc, Monarc, Uretex Sup), multi-filaments (IVS, Safyre comprising two silicone tension bands), extruded crosslinked polypropylene (Obtape) or silicone-coated polypropylene in contact with the urethra (Uratape). A larger space between the fibres is associated with a lower theoretical risk of infection and better tissue ingrowth. Read More

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September 2003

[Development of better tolerated prosthetic materials: applications in gynecological surgery].

J Gynecol Obstet Biol Reprod (Paris) 2002 Oct;31(6):527-40

Service de Gynécologie Obstétrique, CH Dunkerque, 43, rue des Pinsons, 59430 Saint-Pol-sur-Mer, France.

Unlabelled: Meshes have come to be widely used for surgical repair of the dysfunctional pelvic floor. The problem to date has been mesh intolerance. History. Read More

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October 2002

A Schwann cell-seeded intrinsic framework and its satisfactory biocompatibility for a bioartificial nerve graft.

Microsurgery 2001 ;21(1):6-11

Clinic of Plastic, Hand and Reconstructive Surgery, Hannover Medical School, Germany.

To optimize the internal environment of a collagen nerve tube, we designed a Schwann cell-seeded intrinsic framework and its biocompatibility was investigated. We fixed 6-0 polyglactin woven filaments (Vicryl) or polydioxanone monofilaments (PDS) on a silicone ring in a net fashion. It was coated with matrigel and then incubated with cultured newborn or adult Schwann cells. Read More

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