B. Cao et T. Kajiuchi, Pervaporation separation of styrene-ethylbenzene mixture using poly(hexamethylene sebacate)-based polyurethane membranes, J APPL POLY, 74(4), 1999, pp. 753-761
A series of poly(hexamethylene sebacate) (PHS), with molecular weight in a
range of 890-2200, based polyurethanes (PU), were synthesized by solution p
olymerization 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-ethylbenzen
e mixtures, and the properties of sorption and pervaporation were related t
o the composition of the PU membranes. Membranes with a low hard-segment co
ntent and by two-stage polymerization method exhibited high permselectivity
. (C) 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 753-761, 1999.