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Use of solubility parameters for the preparation of hemodialysis membrances
Author(s) -
Chawala A. S.,
Chang T. M. S.
Publication year - 1975
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.1975.070190622
Subject(s) - solubility , cellulose acetate , acetone , solvent , ethanol , membrane , hildebrand solubility parameter , cellulose , formamide , swelling , dialysis tubing , chemistry , nuclear chemistry , dialysis , organic chemistry , chromatography , materials science , biochemistry , medicine , surgery , composite material
The Solvent mixtures of acetone and ethanol (swelling agent) were selected for the preparation of cellulose acetate dialysis membranes using the solubility parameter concept. Increased concentration of ethanol or decreased concentration of cellulose acetate in the formulation resulted in membranes with higher dialysis rate constants but with decreased tensile strengths. The membranes prepared from 20 g of cellulose acetate per 100 ml of mixed solvent of 59.9 mole‐% acetone and 40.1 mole‐% ethanol were comparable to Cuprophane membrane but were better than those prepared by using formamide as a swelling agent.