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Solute rejection by poly(ethylene‐ co ‐vinyl alcohol) membrane prepared by thermally induced phase separation
Author(s) -
Matsuyama Hideto,
Iwatani Tomofumi,
Kitamura Yoshiro,
Tearamoto Masaaki,
Sugoh Nozomu
Publication year - 2001
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 - 10.1002/1097-4628(20010328)79:13<2456::aid-app1053>3.0.co;2-r
Subject(s) - permeance , membrane , vinyl alcohol , materials science , chemical engineering , diluent , polymer chemistry , crystallization , polymer , chemistry , permeation , composite material , organic chemistry , biochemistry , engineering
Porous poly(ethylene‐ co ‐vinyl alcohol) (EVOH) membranes were prepared by polymer crystallization by the thermally induced phase separation (TIPS) process. The permeability of these membranes was examined with respect to solutes of various sizes. Higher solute rejection and lower water permeance were obtained by increasing the polymer concentration in the membrane preparation process and by increasing the cooling rate in the TIPS process. These results were discussed based on the crystalline particle sizes formed in the membranes. The membrane performances were influenced by the kinds of diluents used in the TIPS process. The membranes prepared in the EVOH/propanediol system showed a higher rejection coefficient than did those in the EVOH/butanediol system. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 79: 2456–2463, 2001