膜科学与技术

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Preparation of poly (amide-12-b-ethylene oxide) membrane and their performance

Authors： FENG Shichao, REN Jizhong*, LI Hui, HUA Kaisheng, DENG Maicun

Units： National Engineering Research Center of Membrane Technology,Dalian Institute of Chemical Physics,Dalian 116023,China

KeyWords： CO2 recovery;dense membrane;Pebax1074

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2013,33(4):53-58

Abstract：

Block copolymer poly (amide-12-b-ethylene oxide) (Pebax1074) is used to prepare the hydrophilic dense membrane by casting method. Due to the specific affinity of PEO segment to polar gas CO2, Pebax1074 membrane shows high CO2 permeability and CO2/light gas selectivity. Due to CO2 induced plasticization effect, the CO2 permeability increases with increasing pressure, which is more obvious at low temperature. But the permeabilities of N2、CH4 and H2 decrease with increasing pressure due to the hydrostatic pressure effect, which decreases with increasing temperature.. The relationship between gas permeability and operating temperature can be described by Arrhenius equation. With increasing pressure, the activation energies of permeation for N2、CH4 and H2 decrease, but that for CO2 increases.

Funds：

863项目（2012AA03A611）和国家科技支撑计划（2011BAC08B00）

AuthorIntro：

冯世超（1984-），女，河北邯郸人，博士，从事膜分离过程研究

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