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Pervaporation separation of styrene–ethylbenzene mixture using poly(hexamethylene sebacate)-based polyurethane membranes

✍ Scribed by Bing Cao; Toshio Kajiuchi

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
295 KB
Volume
74
Category
Article
ISSN
0021-8995

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✦ Synopsis

A series of poly(hexamethylene sebacate) (PHS), with molecular weight in a range of 890 -2200, based polyurethanes (PU), were synthesized by solution polymerization with different kinds of isocyanate and chain extender and two kinds of polymerization methods. All the PHS-based PU membranes exhibited selectivity towards styrene during the pervaporation of styrene-ethylbenzene mixtures, and the properties of sorption and pervaporation were related to the composition of the PU membranes. Membranes with a low hard-segment content and by two-stage polymerization method exhibited high permselectivity.

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