KANG, YS JUNG, BS KIM, UY 2024-01-21T23:02:25Z 2024-01-21T23:02:25Z 2022-01-10 1993-01 0140-6566 https://pubs.kist.re.kr/handle/201004/146319 Polyimide of pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA) was hydrophilically modified by partial replacing of ODA with 3,5-diaminobenzoic acid (DABA) containing a carboxylic group with two amine groups. Pervaporation experiments of water/ethanol mixture were performed and the results demonstrated that both flux and permselectivity increase simultaneously with increasing DABA content in polyimide backbone. From the sorption and temperature-dependent permeation behavior, it could be concluded that the diffusivity of permeant plays a major role in determining the pervaporation performance rather than the solubility. English GORDON BREACH SCI PUBL LTD SELECTIVE SEPARATION PERMEATION ACID PERVAPORATION OF WATER-ETHANOL MIXTURE THROUGH HYDROPHILICALLY MODIFIED POLYIMIDE MEMBRANE Article 10.1080/10587259308032486 1 MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.224, pp.137 - 146 MOLECULAR CRYSTALS AND LIQUID CRYSTALS 224 137 146 scie scopus A1993LT04500014 2-s2.0-0002302099 Chemistry, Multidisciplinary Crystallography Materials Science, Multidisciplinary Chemistry Crystallography Materials Science Article; Proceedings Paper SELECTIVE SEPARATION PERMEATION ACID POLYIMIDE DIAMINOBENZOIC ACID PERVAPORATION WATER ETHANOL MIXTURE HYDROPHILIC MODIFICATION