T. Aoki, Yasuo Toyoshima, T. Yoshizawa
1992
Citations
0
Influential Citations
9
Citations
Journal
Polymer
Abstract
Abstract Several p -(1H,1H,2H,2H-perfluoroalkyloxydimethylsilyl)styrenes having perfluoroalkyl groups with different chain lengths were synthesized and polymerized. The polydimethylsiloxane-based blend membranes which contained a very small amount (1.0 wt%) of poly[ p -(1H,1H,2H,2H-perfluoroalkyloxydimethylsilyl)styrene] had good ethanol permselectivity. All of their separation factors ( α EtOH ) and permeation rates ( P ) were higher than those of polydimethylsiloxane. In particular, poly[ p -(1H,1H,2H,2H-perfluorohexyloxydimethylsilyl)styrene] showed the best performance ( α EtOH = 22.3, P = 2.06 × 10 −2 g m m −2 h −1 ). This was attributed to the characteristics of the fluorine-containing polymers which were accumulated at the membrane surface.