| VTES交联PDMS渗透汽化膜分离水中乙醇性能的研究 |
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| 引用本文： | 顾瑾,邓利容,白云翔,张林,陈欢林.VTES交联PDMS渗透汽化膜分离水中乙醇性能的研究[J].膜科学与技术,2010,30(2). |
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| 作者姓名： | 顾瑾 邓利容 白云翔 张林 陈欢林 |
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| 作者单位： | 1. 江南大学,化学与材料工程学院,无锡,214122
2. 浙江大学,化学工程与生物工程学系,杭州,310027 |
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| 基金项目： | 国家自然科学基金资助项目(20876078);;中石化资助项目(207305) |
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| 摘 要： | 以乙烯基三乙氧基硅烷(VTES)为交联剂对端羟基聚二甲基硅氧烷(H-PDMS)进行交联制备了疏水性更强的渗透汽化膜.通过考察交联温度、交联剂用量及料液温度等对该PDMS膜渗透汽化性能的影响发现:对乙醇浓度为6%的体系,交联温度为80℃,质量比m(H-PDMS)∶m(VTES)∶m(DBTDL)(二丁基二月桂酸锡)=1∶0.2∶0.02,原料液温度为40℃时,分离因子和渗透通量分别达到15.5和421.67 g/(m2.h),表明该VTES交联的PDMS膜具有良好的优先透醇性.
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| 关 键 词： | 乙烯基三乙氧基硅烷（VTES） 聚二甲基硅氧烷（PDMS） 渗透汽化膜 乙醇 |
Pervaporation separation of ethanol from aqueous solution by PDMS membranes crosslinked with VTES |
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| GU Jin,DENG Lirong,BAI Yunxiang,ZHANG Lin,CHEN Huanlin.Pervaporation separation of ethanol from aqueous solution by PDMS membranes crosslinked with VTES[J].Membrane Science and Technology,2010,30(2). |
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| Authors: | GU Jin DENG Lirong BAI Yunxiang ZHANG Lin CHEN Huanlin |
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| Affiliation: | 1.Department of Chemical and Material Engineering/a>;Jiangnan University/a>;Wuxi 214122/a>;China/a>;2.Department of Chemical Engineering and Bioengineering/a>;Zhejiang University/a>;Hangzhou 310027/a>;China |
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| Abstract: | In this paper, the PDMS membranes were crosslinked with vinyltriethoxysilane(VTES)to separate ethanol(EtOH)from aqueous solution by pervaporation(PV).The effects of crosslinking temperature, the content of crosslinking agent and feed temperature on the PV performances of PDMS crosslinking membranes were investigated.For 6wt % ethanol aqueous solution, the PDMS membrane had the high separation factor of 15.5 and total flux 421.67 g/(m2·h), respectively, when feed temperature was 40℃, m(H-PDMS):m(VTES): m(DBTDL)= 1 : 0.2: 0.02, and crosslinking temperature was 80℃.It was shown that the mem
branes had high EtOH permselectivity and flux. |
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| Keywords: | VTES PDMS pervaporation membrane ethanol |
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