Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation

doi:10.1002/pol.20200123

	Surface modification ofZIF-90 with triptycene for enhanced interfacial interaction inmixed-matrixmembranes for gas separation
	Zhang, Qinnan 1; Luo, Shuangjiang 2; Weidman, Jennifer 1; Guo, Ruilan 1
刊名	JOURNAL OF POLYMER SCIENCE
	2020-08-25
页码	13
关键词	interfacial morphology mixed-matrix membrane surface modification triptycene-containing polyimide ZIF-90
ISSN号	2642-4150
DOI	10.1002/pol.20200123
英文摘要	Zeolite 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.
资助项目	University of Notre Dame ; U.S. Department of Energy
WOS关键词	MIXED-MATRIX MEMBRANES ; COMPOSITE MEMBRANES ; CONTAINING POLYIMIDE ; ZIF-90 NANOCRYSTALS ; CO2 SEPARATION ; POLYMER ; PERFORMANCE ; TRANSPORT ; MANIPULATION ; IPTYCENES
WOS研究方向	Polymer Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000564883700001
资助机构	University of Notre Dame ; U.S. Department of Energy
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/41921]
专题	中国科学院过程工程研究所
通讯作者	Guo, Ruilan
作者单位	1.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
推荐引用方式 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.