Cross-linked HTPB-based polyurethaneurea membranes for recovery of ethyl acetate from aqueous solution by pervaporation
作者： Yunxiang Bai , Jinwen Qian , Chunfang Zhang , Lin Zhang , Quanfu An
DOI: 10.1016/J.MEMSCI.2008.09.019
关键词:
摘要: Abstract Cross-linked hydroxy terminated polybutadiene (HTPB)-based polyurethaneurea (PU), HTPB–DVB–PU, was synthesized by a three-step polymerization process. It firstly used as membrane material to recover aroma, ethyl acetate (EA), from aqueous solution pervaporation (PV). The effects of the content cross-linker DVB, EA concentration in feed, and operating temperature on PV performance HTPB–DVB–PU membranes were investigated. demonstrated high permselectivity well total flux. introduction DVB significantly enhanced resistance ability membranes. With increasing content, separation factor increased while flux decreased little. best performance, 655 256 g/m 2 h, respectively with feed 2.5 wt% at 30 °C. These performances explained terms viewpoint chemical compositions physical structures
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