Publications by authors named "Jong Geun Seong"

3 Publications

  • Page 1 of 1

Functionalized Boron Nitride Nanosheets: A Thermally Rearranged Polymer Nanocomposite Membrane for Hydrogen Separation.

Angew Chem Int Ed Engl 2018 Dec 11;57(49):16056-16061. Epub 2018 Nov 11.

Department of Chemical Engineering, Monash University, Clayton, Victoria, 3800, Australia.

Amino functionalized boron nitride nanosheets (FBN) were incorporated into a crosslinked, thermally rearranged polyimide (XTR) to fabricate FBN-XTR nanocomposite membrane. The FBN-XTR membrane exhibited a small decrease in H permeability but demonstrated a remarkably increased H gas selectivity over other gases, compared with XTR. The XTR membrane heat-treated at 425 °C had a H permeability of 210 Barrers and a H /CH separation factor of 24.1, whereas the nanocomposite membrane with 1 wt % FBN exhibited a H permeability of 110 Barrers and H /CH separation factor of 275, an order of magnitude greater. At 1 wt % FBN loading, the FBN-XTR membrane showed three times higher tensile strength and 60 % higher elongation than pristine XTR membrane. In addition, FBN-XTR was found to be able to be readily processed into thin-film membranes for practical H separation applications.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1002/anie.201809126DOI Listing
December 2018

Thermally rearranged (TR) bismaleimide-based network polymers for gas separation membranes.

Chem Commun (Camb) 2016 Nov;52(93):13556-13559

Department of Energy Engineering, College of Engineering, Hanyang University, Seoul 04763, Republic of Korea.

Highly permeable, thermally rearranged polymer membranes based on bismaleimide derivatives that exhibit excellent CO permeability up to 5440 Barrer with a high BET surface area (1130 m g) are reported for the first time. In addition, the membranes can be easily used to form semi-interpenetrating networks with other polymers endowing them with superior gas transport properties.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1039/c6cc06609gDOI Listing
November 2016

Soluble, microporous, Tröger's Base copolyimides with tunable membrane performance for gas separation.

Chem Commun (Camb) 2016 Mar;52(19):3817-20

Department of Energy Engineering, College of Engineering, Hanyang University, Seoul 04763, Republic of Korea.

A facile two-step synthesis beginning with commercial monomers to prepare copolyimides by Tröger's Base (TB) formation provides membranes for the first time with tunable gas transport relative to hydrogen separations, CO2 plasticization resistance, and good mechanical and thermal properties.
View Article and Find Full Text PDF

Download full-text PDF

Source
http://dx.doi.org/10.1039/c5cc09783eDOI Listing
March 2016