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Poly(vinylimidazole-co-butyl acrylate) membranes for CO2 separation
Song, Ting1,2; Deng, Jing3; Deng, Liyuan3; Bai, Lu2; Zhang, Xiangping2; Zhang, Suojiang2; Szabo, Peter1; Daugaard, Anders E.1
2019-01-03
Source PublicationPOLYMER
ISSN0032-3861
Volume160Pages:223-230
AbstractRoom temperature ionic liquids (RTILs) are known to exhibit high CO2 solubility, which makes them interesting candidates for separation and purification of mixed gas streams. Particularly, RTILs based on imidazoles have shown very promising results. However, membranes of the corresponding poly(RT-IL)s are inherently brittle, which makes them too fragile for use in freestanding membranes. Therefore, copolymers of N-vinylimidazole (VIm) and butyl acrylate (BuA) were prepared, showing reactivity ratios of r(BuA) = 1.91-2.02 and r(VIm) = 0.094-0.10. The prepared copolymers of poly(VIm-co-BuA) with a copolymer composition of 24:76 had sufficiently low T-g ( - 6.6 degrees C) and were flexible enough to be used for membrane preparation. The copolymer was quarternized and crosslinked in a one-pot reaction into thin film membranes employing a mixture of mono and difunctional alkyl halides. Membranes were prepared using a mixture of 1:8, 1:2 and 1:0 of 1,6-dibromohexane and 1-bromobutane, resulting in different degrees of crosslinking. The one-pot process additionally allows incorporation of up to 16 wt% free RTIL (BMIM Tf2N) in the 1:0 ratio membranes. All membranes were tested for CO2 permeability (33.7-54.38 barrer), and for selectivity towards N-2 and CH4. By varying the crosslinking degree, it was observed that CO2 permeability increased with decreasing the degree of crosslinking. Finally, films prepared with free RTIL led to an improvement of the gas separation performance, with CO2 permeability increased from 33.71 to 38.77 barrer and CO2/N-2 permselectivity increased from 20.81 to 27.82.
KeywordN-vinylimidazole poly(ionic liquid) Crosslinking free-standing membrane Gas separation
DOI10.1016/j.polymer.2018.11.058
Language英语
WOS KeywordCOPOLYMERIZATION REACTIVITY RATIOS ; IONIC LIQUIDS ; POLY(IONIC LIQUID)S ; ANION-EXCHANGE ; LINEAR METHODS ; CROSS-LINKING ; PERFORMANCE ; POLYMER ; EXTRACTION ; NANOTUBES
Funding ProjectDepartment of Chemical and Biochemical Engineering at the Technical university of Denmark ; National Key R&D Program of China[2017YFB0603401-03] ; National Natural Science Foundation of China[21425625] ; Institute of Process Engineering in Beijing
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
Funding OrganizationDepartment of Chemical and Biochemical Engineering at the Technical university of Denmark ; National Key R&D Program of China ; National Natural Science Foundation of China ; Institute of Process Engineering in Beijing
WOS IDWOS:000455024100024
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/27696
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Suojiang; Daugaard, Anders E.
Affiliation1.Tech Univ Denmark, Dept Chem & Biochem Engn, Danish Polymer Ctr, Bldg 229, DK-2800 Lyngby, Denmark
2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing 100190, Peoples R China
3.Norwegian Univ Sci & Technol, Dept Chem Engn, N-7491 Trondheim, Norway
Recommended Citation
GB/T 7714
Song, Ting,Deng, Jing,Deng, Liyuan,et al. Poly(vinylimidazole-co-butyl acrylate) membranes for CO2 separation[J]. POLYMER,2019,160:223-230.
APA Song, Ting.,Deng, Jing.,Deng, Liyuan.,Bai, Lu.,Zhang, Xiangping.,...&Daugaard, Anders E..(2019).Poly(vinylimidazole-co-butyl acrylate) membranes for CO2 separation.POLYMER,160,223-230.
MLA Song, Ting,et al."Poly(vinylimidazole-co-butyl acrylate) membranes for CO2 separation".POLYMER 160(2019):223-230.
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