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Pervaporation through membranes made from acyl derivatives of poly(2,6‐dimethyl‐1,4‐phenylene oxide)
Author(s) -
Schauer J.,
Bleha M.
Publication year - 1992
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.1992.070461012
Subject(s) - pervaporation , membrane , solubility , phenylene , solvent , acetone , polymer chemistry , polymer , chemistry , oxide , hildebrand solubility parameter , organic chemistry , acylation , aqueous solution , permeation , catalysis , biochemistry
Several acyl derivatives of poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) were obtained by Friedel—Crafts acylation, and the products were used to prepare membranes. During the pervaporation of 10% aqueous solutions of ethanol, acetone, 1‐propanol, or dioxan, membranes made from unmodified, benzoylated, or propionylated PPO (glassy polymers, T g > 200°C) were preferentially permeable to water, and their separation factors were mainly dependent on the molecular weight of the solvent. Membranes made from palmitoylated PPO (nonglassy polymer, T g = 34.9°C) were preferentially permeable to organic solvents, and their separation factors correlated with the solubility parameters of the solvents under investigation. As regards membranes made from caproylated PPO ( T g = 130.6°C), there was no unambiguous relation to molecular weights of the solvents or to their solubility parameters. © 1992 John Wiley & Sons, Inc.