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ISSN : 1226-0088(Print)
ISSN : 2288-7253(Online)
Membrane Journal Vol.24 No.2 pp.100-106

지환족 다이안하이드라이드를 포함하는 용해성 폴리이미드의 기체투과특성

김 은 희*,**, 박 채 영*, 김 정 훈*,**,†
*국화학연구원 환경자원공정연구센터 자원분리회수그룹, **과학기술연합대학원대학교 청정화학 및 생물학과

Gas Transport Properties of Soluble Polyimides Containing Alicyclic Dianhydride

Jeong-Hoon Kim*,**,†, Eun Hee Kim*,**, Chae Young Park*
*Resources Separation & Recovery Research Group (RSRRG), Environmental Resources and Process Research Center,
Korea Research Institute of Chemical Technology, Daejeon 305-343, Korea
**Green Chemistry and Environmental Biotechnology, University of Science and Technology, Daejeon 305-333, Korea
(Received February 18, 2014, Revised March 1, 2014, Accepted March 18, 2014)


In this work, soluble polyimides were synthesized and characterized from 5-(2,5-dioxotetrahydrofuryl)-3-methyl-3-cyclohexene-1,2-dicarboxylic anhydride (DOCDA) and two diamines such as 4,4’-diaminodiphenylether (ODA), 1,4-phenyl-enediamine (p-PDA). Their thermal properties were analyzed with differential scanning calorimeter (DSC). The gas perme-ability coefficients (P) and ideal selectivity for CH4 and CO2 of the prepared polyimide membranes were measured with a time-lag apparatus. DOCDA-ODA, DOCDA-p-PDA showed good permeability and selectivity; the permeabilities of CO2 was 6.10, 0.74 barrers and the selectivity of CO2/CH4 were 67.03, 46.25, respectively. Therefore, DOCDA-ODA showed good possibility as gas separation membrane.