Thermally rearranged polymer membranes containing highly rigid biphenyl ortho-hydroxyl diamine for hydrogen separation

doi:10.1016/j.memsci.2020.118053

	Thermally rearranged polymer membranes containing highly rigid biphenyl ortho-hydroxyl diamine for hydrogen separation
	Hu, Xiaofan 2; Lee, Won Hee 2; Zhao, Jiayi 3; Kim, Ju Sung 2; Wang, Zhen 3,4; Yan, Jingling 4; Zhuang, Yongbing 1; Lee, Young Moo 2
刊名	JOURNAL OF MEMBRANE SCIENCE
	2020-06-01
卷号	604 页码:12
关键词	Polyimides TR polymers High rigidity Hydrogen separation Membranes
ISSN号	0376-7388
DOI	10.1016/j.memsci.2020.118053
英文摘要	A novel bulky and rigid ortho-hydroxyl diamine, 3,3'-diamino-5,5',6,6'-tetramethyl-[1,1'-biphenyl]-2,2'-diol (TMBDA), was synthesized for gas separation membranes in this study. The chemical structure of TMBDA with four methyl groups and a fixed twist biphenyl center was rationally designed, and consequently presented a superior energy barrier of rotation, which efficiently suppressed chain motion and enhanced polymer rigidity. Four types of TMBDA-based polyimides (PIs) were prepared with two commercially available dianhydrides, i.e., 4,4'-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) and pyromellitic dianhydride (PMDA), from two different synthetic routes, azeotropic and chemical imidization. Thermally rearranged (TR) polymers were obtained from TMBDA-based PIs by thermal treatment at various temperatures. Thermal properties and physicochemical characteristics of TMBDA-based PIs and TR polymers were investigated. The resulting polymers exhibited high glass transition temperatures (T-g) and contorted backbone structures with three discrete d-spacing values, where the smallest interchain d-spacing was located between the kinetic diameters of H-2 and CH4 molecules. Moreover, TMBDA-based TR polymers showed outstanding performances in hydrogen separation with comparable H-2 permeability and higher selectivity than reported TRs. For instance, 6F-TM-Ac-425 exhibited a H-2 permeability of 325 Barrer with H-2/CH4 and H-2/N-2 selectivities of 50 and 39, respectively, approaching to the 2008 Robeson upper bound.
资助项目	Technology Development Program to Solve Climate Change through the National Research Foundation (NRF) - Ministry of Science and ICT, South Korea[2018M1A2A2061979]
WOS关键词	GAS PERMEATION PROPERTIES ; POSITION FUNCTIONAL-GROUP ; PRECURSOR SYNTHESIS ROUTE ; TROGERS BASE ; INTRINSIC MICROPOROSITY ; POLYIMIDE MEMBRANES ; HIGH-PERFORMANCE ; MOLECULAR-SIEVE ; TRANSPORT ; POLYBENZOXAZOLES
WOS研究方向	Engineering ; Polymer Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000545790200007
资助机构	Technology Development Program to Solve Climate Change through the National Research Foundation (NRF) - Ministry of Science and ICT, South Korea
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/41284]
专题	中国科学院过程工程研究所
通讯作者	Lee, Young Moo
作者单位	1.Univ Chinese Acad Sci, Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Hanyang Univ, Coll Engn, Dept Energy Engn, Seoul 04763, South Korea 3.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun, Peoples R China 4.Chinese Acad Sci, Changchun Inst Appl Chem, Lab Polymer Composites Engn, Changchun, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xiaofan,Lee, Won Hee,Zhao, Jiayi,et al. Thermally rearranged polymer membranes containing highly rigid biphenyl ortho-hydroxyl diamine for hydrogen separation[J]. JOURNAL OF MEMBRANE SCIENCE,2020,604:12.
APA	Hu, Xiaofan.,Lee, Won Hee.,Zhao, Jiayi.,Kim, Ju Sung.,Wang, Zhen.,...&Lee, Young Moo.(2020).Thermally rearranged polymer membranes containing highly rigid biphenyl ortho-hydroxyl diamine for hydrogen separation.JOURNAL OF MEMBRANE SCIENCE,604,12.
MLA	Hu, Xiaofan,et al."Thermally rearranged polymer membranes containing highly rigid biphenyl ortho-hydroxyl diamine for hydrogen separation".JOURNAL OF MEMBRANE SCIENCE 604(2020):12.