Synthesis and Characterization of Fluorene-Based Polybenzimidazole Copolymer for Gas Separation

Title
Synthesis and Characterization of Fluorene-Based Polybenzimidazole Copolymer for Gas Separation
Authors
한준영이주연김형준김만호한수경장종현조은애유성종헨켄스마이어디억
Keywords
Polybenzimidazole; Polymer membrane; Gas separation; copolymers; membranes; separation techniques
Issue Date
2014-08
Publisher
Journal of applied polymer science
Citation
VOL 131, NO 15, 40521-1-40521-9
Abstract
The purpose of this study is to develop new cardo-polybenzimidazole (CPBI) copolymers containing cardo fluorene, with improved gas permeability, specifically oxygen permeability. The characteristics of these copolymers are investigated by Fourier transform infrared spectroscopy, nuclear magnetic resonance, 1H and 13C), thermo-gravimetric analysis, and wide-angle X-ray diffraction. These membranes fabricated from copolymers have relatively high oxygen diffusion coefficients, determined using gas permeation. In particular, the CPBI-co91 (synthesized by using the monomers ratio containing dibenzoic acid = 9 : 1) membrane have oxygen permeability coefficient (PO2) of 10.69 Barrer, theoretical selectivity of 5.4 for oxygen to nitrogen, and O2 diffusion coefficient of 9.64 × 10−8 cm2/s.
URI
http://pubs.kist.re.kr/handle/201004/47654
ISSN
00218995
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KIST Publication > Article
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