High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting

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	High-performance PDMS membranes for pervaporative removal of VOCs from water: The role of alkyl grafting
	Zhou, Hui 1,2; Su, Yi 1; Chen, Xiangrong 1; Luo, Jianquan 1; Wan, Yinhua 1
刊名	JOURNAL OF APPLIED POLYMER SCIENCE
	2016-08-15
卷号	133 期号:31 页码:43700
关键词	grafting membranes separation techniques structure-property relations
ISSN号	0021-8995
英文摘要	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,
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Polymer Science
研究领域[WOS]	Polymer Science
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000378429100026
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21176]
专题	过程工程研究所_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
推荐引用方式 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.