Choi, Sun Hee Kim, Da Hye Kim, Do Young Han, Jun Young Yoon, Chang Won Ham, Hyung Chul Kim, Jin-Ho Kim, Hyoung-Juhn Nam, Suk Woo Lim, Tae-Hoon Han, Jonghee 2024-01-20T06:31:09Z 2024-01-20T06:31:09Z 2021-09-05 2015-08-20 0021-8995 https://pubs.kist.re.kr/handle/201004/125115 A polymeric gas separation membrane utilizing polybenzimidazole based on 4,4-(hexafluoroisopropylidene)bis(benzoic acid) was prepared. The synthesized membrane has an effective permeating area of 8.3 cm(2) and a thickness of 30 +/- 2 mu m. Gas permeation properties of the membrane were determined using H-2, CO2, CO, and N-2 at temperatures ranging from 24 degrees C to 200 degrees C. The PBI-HFA membranes not only exhibited excellent H-2 permeability, but it also displayed superior gas separation performance particularly for H-2/N-2 and H-2/CO2. The permeation parameters for both permeability and selectivity [PH2 and (H-2/N-2); PH2 and (H-2/CO2)] obtained for the new material were found to be dependent on trans-membrane pressure difference as well as temperature, and were found to surpass those reported by Robeson in 2008. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42371. English WILEY GAS-TRANSPORT PROPERTIES HOLLOW-FIBER MEMBRANES MOLECULAR-WEIGHT POLYBENZIMIDAZOLE POLYCARBONATES PERMEABILITY ENHANCEMENT A highly selective polybenzimidazole-4,4-(hexafluoroisopropylidene)bis(benzoic acid) membrane for high-temperature hydrogen separation Article 10.1002/app.42371 1 JOURNAL OF APPLIED POLYMER SCIENCE, v.132, no.32 JOURNAL OF APPLIED POLYMER SCIENCE 132 32 scie scopus 000355731500007 2-s2.0-84929653842 Polymer Science Polymer Science Article GAS-TRANSPORT PROPERTIES HOLLOW-FIBER MEMBRANES MOLECULAR-WEIGHT POLYBENZIMIDAZOLE POLYCARBONATES PERMEABILITY ENHANCEMENT membranes properties and characterization separation techniques