Yoo, SH Jho, JY Won, J Park, HC Kang, YS 2024-01-21T14:14:46Z 2024-01-21T14:14:46Z 2021-09-05 2000-03 1226-086X https://pubs.kist.re.kr/handle/201004/141553 The effect of solvent/cosolvent composition on the morphology and permeance of polyimide membrane was investigated. Asymmetric membranes were fabricated through phase inversion using immersion-precipitation method. The mixture of gamma-butyrolactone (GBL) and N-methyl-2-pyrrolidinone (NMP) was used as solvent. The membrane morphology changed from finger-like to sponge-like as the proportion of GEL increased. It was proved that the heat of mixing of solvent and nonsolvent was an important factor in controlling the membrane morphology. Membranes of finger-free morphology and high permeance could be prepared by controlling the solvent/cosolvent ratio. English KOREAN SOC INDUSTRIAL ENGINEERING CHEMISTRY AROMATIC POLYIMIDES SEPARATION MECHANISM Effect of solvent and cosolvent on the morphology and permeance of asymmetric polyimide membrane Article 1 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.6, no.2, pp.129 - 132 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY 6 2 129 132 scie scopus 000086149100010 Chemistry, Multidisciplinary Engineering, Chemical Chemistry Engineering Article AROMATIC POLYIMIDES SEPARATION MECHANISM asymmetric membrane phase separation macrovoid heat of mixing