Premium
Preparation and properties of soluble copolysulfoneimide and performance of solvent‐resistant ultrafiltration membrane
Author(s) -
Kim InChul,
Kim JongHo,
Lee KewHo
Publication year - 2002
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.10557
Subject(s) - polyimide , pyromellitic dianhydride , solvent , ultrafiltration (renal) , membrane , acetone , polymer chemistry , phase inversion , permeation , hexane , sulfone , materials science , chemical engineering , diamine , chemistry , organic chemistry , chromatography , biochemistry , layer (electronics) , engineering
Abstract Soluble copolysulfoneimides were synthesized by thermal two‐step method in solution of N ‐methyl‐2‐pyrrolidone. The used aromatic diamines were bis[4‐(3‐aminophenoxy)phenyl]sulfone (BAPS‐m) and 3,3′‐diaminosulfone, and dianhydrides were pyromellitic dianhydride, 4,4′‐oxyphthalic anhydride, and 3,3′,4,4′‐diphenylsulfone tetracarboxylic dianhydride. The molar ratio of diamines was changed to reduce the content of BAPS‐m. The thermal and mechanical properties of polyimides were investigated. The polyimide ultrafiltration membrane with molecular weight cut‐off of 10 kDa could be successfully prepared by phase‐inversion method. Various solvent (water, alcohols, acetone, and hexane) fluxes were measured to investigate solvent‐resistance and membrane behavior during solvent permeation. The activation energy relationship between hexane flux and viscosity with temperature was also studied. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 1024–1030, 2002