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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
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume133Issue:31Pages:43700
AbstractTo 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,
KeywordGrafting Membranes Separation Techniques Structure-property Relations
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/app.43700
Indexed BySCI
Language英语
WOS KeywordVOLATILE ORGANIC-COMPOUNDS ; LINKED POLY(DIMETHYLSILOXANE) MEMBRANES ; AQUEOUS-SOLUTION ; ETHYL-ACETATE ; POSITRON-ANNIHILATION ; PERMSELECTIVE PERVAPORATION ; POLYURETHANEUREA MEMBRANES ; DISTILLATION PERFORMANCE ; SEPARATION PROPERTIES ; HYBRID MEMBRANES
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
Funding OrganizationNational 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 IDWOS:000378429100026
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21176
Collection生化工程国家重点实验室
Affiliation1.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
Recommended Citation
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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