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High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting
Zhou, Hui1,2; Su, Yi1; Chen, Xiangrong1; Luo, Jianquan1; Wan, Yinhua1
2016-08-15
发表期刊JOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
卷号133期号:31页码:43700
摘要To improve the pervaporation performance of PDMS membrane, alkyl groups with different chain length were grafted into PDMS matrix. The prepared membranes were characterized by ATR-IR, DSC, TGA, PALS, and tensile testing. The effects of alkyl grafting on pervaporation performance of PDMS membrane were investigated in separation of ethyl acetate/water mixture. Experimental results show that the separation factor of PDMS membrane is largely improved by alkyl grafting because of the enhanced preferential sorption of ethyl acetate, and this improvement depends on alkyl grafting ratio and alkyl chain length. The total flux of PDMS membrane reduces after alkyl grafting owing to the decreased free volume. When grafting ratio is above 6.9%, membrane grafted with shorter alkyl groups is preferred for pervaporation. The best pervaporation performance is achieved by 9% octyl grafted PDMS membranes with a separation factor of 592 and a total flux of 188 gm(-2) h(-1) in separation of 1% ethyl acetate/water mixture at 40 degrees C. Moreover, this octyl grafted PDMS membrane also exhibits excellent separation performance in removal of butyl acetate, methyl-tert-butyl ether, and n-hutanol from water. (C) 2016 Wiley Periodicals, Inc,
关键词Grafting Membranes Separation Techniques Structure-property Relations
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/app.43700
收录类别SCI
语种英语
关键词[WOS]VOLATILE ORGANIC-COMPOUNDS ; LINKED POLY(DIMETHYLSILOXANE) MEMBRANES ; AQUEOUS-SOLUTION ; ETHYL-ACETATE ; POSITRON-ANNIHILATION ; PERMSELECTIVE PERVAPORATION ; POLYURETHANEUREA MEMBRANES ; DISTILLATION PERFORMANCE ; SEPARATION PROPERTIES ; HYBRID MEMBRANES
WOS研究方向Polymer Science
WOS类目Polymer Science
项目资助者National High Technology Research and Development Program of China(2012AA021202 ; National Natural Science Foundation of China(21176239) ; Chinese Academy of Sciences' Key Deployment Project(KSZD-EW-2-017-3) ; 2013AA065803)
WOS记录号WOS:000378429100026
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21176
专题生化工程国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, 1 North 2nd St, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
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GB/T 7714
Zhou, Hui,Su, Yi,Chen, Xiangrong,et al. High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2016,133(31):43700.
APA Zhou, Hui,Su, Yi,Chen, Xiangrong,Luo, Jianquan,&Wan, Yinhua.(2016).High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting.JOURNAL OF APPLIED POLYMER SCIENCE,133(31),43700.
MLA Zhou, Hui,et al."High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting".JOURNAL OF APPLIED POLYMER SCIENCE 133.31(2016):43700.
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