Pervaporation of 1,2‐dimethoxyethane from aqueous solutions by crosslinked oligosilylstyrene–poly(dimethylsiloxane) composite membranes
Pervaporation of 1,2‐dimethoxyethane from aqueous solutions by crosslinked oligosilylstyrene–poly(dimethylsiloxane) composite membranes
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通过交联低聚硅烷基苯乙烯-聚（二甲基硅氧烷）复合膜从水溶液中渗透蒸发 1,2-二甲氧基乙烷
DOI：
10.1002/app.13715
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发表时间：
2004
影响因子：
3
通讯作者：
M. Brook
中科院分区：
文献类型：
--
作者：
L. Liang;J. M. Dickson;Jianxiong Jiang;M. Brook
采用交联低硅基苯乙烯-聚二甲基硅氧烷复合膜对1，2-二甲氧基乙烷（1，2-DME）进行渗透汽化分离。通过将端氢硅基苯乙烯低聚物和端乙烯基聚二甲基硅氧烷溶液浇铸到聚砜超滤膜表面制备了复合膜。以铂络合物为催化剂，通过端氢硅基苯乙烯低聚物和端乙烯基聚二甲基硅氧烷的反应生成交联聚二甲基硅氧烷凝胶。考察了1，2-DME进料组成、进料温度、下游压力和复合膜顶层厚度对复合膜渗透汽化性能的影响。该复合膜对1，2-DME具有较好的选择性。根据不同的操作条件，1，2-DME的分离因子和渗透速率分别为55-184和0.31-3.3 g/m2·h。© 2004 Wiley Periodicals，Inc.应用聚合物科学杂志92：2284-2294，2004
Crosslinked oligosilylstyrene–poly(dimethylsiloxane) composite membranes were used to separate 1,2-dimethoxyethane (1,2-DME) from dilute aqueous solutions through a pervaporation process. The composite membranes were prepared through the casting of solutions of H-terminated oligosilylstyrene and vinyl-terminated poly(dimethylsiloxane) onto the surfaces of polysulfone ultrafiltration membranes. A crosslinked poly(dimethylsiloxane) gel was generated through the reaction of H-terminated oligosilylstyrene and vinyl-terminated poly(dimethylsiloxane), with a platinum complex used as a catalyst. The pervaporation characteristics of the composite membranes were investigated with respect to the feed composition of 1,2-DME, the feed temperature, the downstream pressure, and the top-layer thickness of the composite membranes. The composite membranes exhibited preferential selectivity to 1,2-DME. Depending on the operation conditions, the separation factor and permeation rate of 1,2-DME were 55–184 and 0.31–3.3 g/m2 h, respectively. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 2284–2294, 2004