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Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation
Zhang, Qinnan1; Luo, Shuangjiang2; Weidman, Jennifer1; Guo, Ruilan1
2020-08-25
Source PublicationJOURNAL OF POLYMER SCIENCE
ISSN2642-4150
Pages13
AbstractZeolite imidazole framework (ZIF-90) nanoparticles were chemically modified by grafting triptycene moieties. The modified nanoparticles were introduced into a triptycene-based polyimide as fillers to generate mixed matrix membranes (MMMs) for gas separation. The incorporation of "hook-like" triptycene moieties in both dispersed and continuous phases led to intimate contact between the two phases and thus defect-free interfacial morphology, due to the supramolecular interlocking and pi-pi stacking interaction between triptycene units presented in both phases. The filler/polymer solution showed shear thickening behavior due to such strong interfacial interaction. The separation performance of the prepared composite membranes was investigated as a function of filler loading and particle surface grafting density. Pure-gas permeation results showed that the gas permeabilities increased expectedly as the filler loading increased, with stable or improved selectivities. The reduced permeability relative to pristine polyimide film is likely due to the pore blockage of ZIF-90 upon grafting triptycene moieties on the particle surface. Reducing the grafting density of triptycene moieties led to improved permeability and selectivity suggesting good tunability of this series of new composite membranes. Overall, modification of nanofiller with hierarchical triptycene moieties offers a fundamentally new avenue for creation of composite membranes with unique properties in gas separations.
Keywordinterfacial morphology mixed-matrix membrane surface modification triptycene-containing polyimide ZIF-90
DOI10.1002/pol.20200123
Language英语
WOS KeywordMIXED-MATRIX MEMBRANES ; COMPOSITE MEMBRANES ; CONTAINING POLYIMIDE ; ZIF-90 NANOCRYSTALS ; CO2 SEPARATION ; POLYMER ; PERFORMANCE ; TRANSPORT ; MANIPULATION ; IPTYCENES
Funding ProjectUniversity of Notre Dame ; U.S. Department of Energy
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
Funding OrganizationUniversity of Notre Dame ; U.S. Department of Energy
WOS IDWOS:000564883700001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41922
Collection中国科学院过程工程研究所
Corresponding AuthorGuo, Ruilan
Affiliation1.Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA
2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Inst Proc Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Qinnan,Luo, Shuangjiang,Weidman, Jennifer,et al. Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation[J]. JOURNAL OF POLYMER SCIENCE,2020:13.
APA Zhang, Qinnan,Luo, Shuangjiang,Weidman, Jennifer,&Guo, Ruilan.(2020).Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation.JOURNAL OF POLYMER SCIENCE,13.
MLA Zhang, Qinnan,et al."Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation".JOURNAL OF POLYMER SCIENCE (2020):13.
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