CAS OpenIR  > 生化工程国家重点实验室
Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling
Zhuang, Xiaojie1,2; Chen, Xiangrong1; Su, Yi1; Luo, Jianquan1; Feng, Shichao1; Zhou, Hui1,2; Wan, Yinhua1
2016-02-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume499Issue:FEBPages:386-395
AbstractThe objective of this work was to study the effect of silane coupling agent on the performance of mixed matrix membranes (MMMs) and to develop a mathematical model to analyze the performance of the MMMs. The silicalite-1 modified by various alkoxysilanes was incorporated into polydimethysiloxane (PDMS) to prepare dense MMMs. The modified silicalite-1 and corresponding MMMs were characterized by FT-IR, CA, TGA, DSC and SEM. These results confirmed that the silicalite-1 was successfully modified by various alkoxysilanes. The effects of alkoxysilane chain length and chemical structure on the pervaporation (PV) performance of MMMs were discussed in detail. All the silane modification did not change the framework of silicalite-1. Better dispersion of silicalite-1 in PDMS was attained after modification and all the modified membranes could eliminate the nonselective voids inside the membranes. Moreover, the silane coupling agent had a contradictory effect on the PV performance of the membranes. On the one hand, the silane coupling agent improved the compatibility between silicalite-1 and PDMS. On the other hand, the silane coupling agent introduced a silane phase around the silicalite-1, which depressed the selectivity of the pristine silicalite-1. Silicalite-1 grafted with vinyl group showed the best compatibility with PDMS, and the resulting MMMs had the highest separation factor to ethanol because strong chemical bonds between vinyl-silicalite-1 and PDMS were formed with the thinnest silane film. For the separation of ethanol from a dilute solution, a separation factor of 34.3 was obtained with the vinyl-MMMs, which was 49% higher than that of unmodified membrane. As the silicalite-1 content increased, the separation factor increased. Furthermore, a mathematical model was proposed to predict the performance of MMMs. And both the permeability and selectivity obtained by the proposed model were in good agreement with the experiment data. (C) 2015 Elsevier B.V. All rights reserved.
KeywordSilicalite-1 Polydimethysiloxane (Pdms) Pervaporation Modification
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.memsci.2015.10.018
Indexed BySCI
Language英语
WOS KeywordMIXED MATRIX MEMBRANES ; ALCOHOL PERMSELECTIVE PERVAPORATION ; SILICONE-RUBBER MEMBRANES ; FILLED PDMS MEMBRANES ; COMPOSITE MEMBRANES ; AQUEOUS MIXTURES ; ZEOLITE ; ETHANOL ; SEPARATION ; WATER
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationNational High-Tech R&D 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:000365591200038
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19902
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn Inst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhuang, Xiaojie,Chen, Xiangrong,Su, Yi,et al. Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling[J]. JOURNAL OF MEMBRANE SCIENCE,2016,499(FEB):386-395.
APA Zhuang, Xiaojie.,Chen, Xiangrong.,Su, Yi.,Luo, Jianquan.,Feng, Shichao.,...&Wan, Yinhua.(2016).Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling.JOURNAL OF MEMBRANE SCIENCE,499(FEB),386-395.
MLA Zhuang, Xiaojie,et al."Surface modification of silicalite-1 with alkoxysilanes to improve the performance of PDMS/silicalite-1 pervaporation membranes: Preparation, characterization and modeling".JOURNAL OF MEMBRANE SCIENCE 499.FEB(2016):386-395.
Files in This Item:
File Name/Size DocType Version Access License
Surface modification(2311KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhuang, Xiaojie]'s Articles
[Chen, Xiangrong]'s Articles
[Su, Yi]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhuang, Xiaojie]'s Articles
[Chen, Xiangrong]'s Articles
[Su, Yi]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhuang, Xiaojie]'s Articles
[Chen, Xiangrong]'s Articles
[Su, Yi]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.