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Effect of hydrolysis on porosity of cellulose acetate reverse osmosis membranes
Author(s) -
Košutić K.,
Kunst B.
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/app.1609
Subject(s) - membrane , cellulose triacetate , hydrolysis , cellulose acetate , cellulose , chemical engineering , permeation , reverse osmosis , porosity , polymer chemistry , materials science , chemistry , chromatography , organic chemistry , composite material , biochemistry , engineering
The alkaline hydrolysis of asymmetric cellulose acetate membranes was investigated. The changes of cellulose triacetate and cellulose diacetate membrane performances caused by hydrolysis of the membrane material were measured, and the data were analyzed in terms of pore size distributions and effective number of pores in the upper membrane layer before and after hydrolysis. The resulting membranes rejection factors decrease of 10–25%, and a noticeable permeation rates increase were caused by closing of a part of the smallest “network” membrane pores and by increasing the size of the other pores. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1768–1775, 2001