Synthesis and gas separation performance of intrinsically microporous polyimides derived from sterically hindered binaphthalenetetracarboxylic dianhydride

doi:10.1039/d0py00594k

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Synthesis and gas separation performance of intrinsically microporous polyimides derived from sterically hindered binaphthalenetetracarboxylic dianhydride
	Hu, Xiaofan ; Mu, Hongliang ; Miao, Jie ; Lu, Yao ; Wang, Xianwei ; Meng, Xiangsheng ; Wang, Zhen ; Yan, Jingling
刊名	POLYMER CHEMISTRY
	2020
卷号	11 期号:25 页码:4172-4179
关键词	TROGERS BASE PERMEATION PROPERTIES TRANSPORT PROPERTIES LADDER POLYMERS CHAIN-PACKING UPPER-BOUNDS FREE-VOLUME MEMBRANES PERMEABILITY TRIPTYCENE
DOI	10.1039/d0py00594k
英文摘要	A novel dianhydride, 3,3 '-di-tert-butyl-2,2 '-dimethoxy-[1,1 '-binaphthalene]-6,6 ',7,7 '-tetracarboxylic dianhydride (TNTDA), was preparedviaa multi-step process. A model compound made using TNTDA and aniline has a dihedral angle of 75 degrees between the two naphthalimide rings, evidenced by single crystal X-ray diffraction data. High temperature polycondensation of TNTDA with four different diamines afforded four intrinsically microporous polyimides (PIM-PIs). The fractional free volumes (FFV), surface areas, and average inter-chain distances of the polyimides were 0.181-0.214, 379-564 m(2)g(-1), and 0.635-0.682 nm, respectively. Furthermore, the rigid, bulky, and contorted structures of the PIM-PIs led to the formation of roughly 0.6 nm ultramicropores and roughly 1.2 nm larger micropores. The ultramicropores can improve the gas size-sieving capability of the polyimides, while the larger micropores can facilitate high permeability. Consequently, the TNTDA-based PIM-PIs showed an improved gas separation performance compared to polymers made using the benchmark monomer, 4,4 '-(hexafluoroisopropylidene)diphthalic anhydride. In particular, polymers from TNTDA and 2,6-diaminotriptycene (DAT) exhibited the best performance, with CO2/CH(4)and O-2/N(2)separation metrics approaching or surpassing the 2008 Robeson upper bounds, because of the presence of additional ultramicropores related to the internal free volume of the triptycene moiety.
学科主题	Polymer Science
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20668]
专题	2020专题
作者单位	1.Wang, Z 2.Yan, JL (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 3.Meng, XS
推荐引用方式 GB/T 7714	Hu, Xiaofan,Mu, Hongliang,Miao, Jie,et al. Synthesis and gas separation performance of intrinsically microporous polyimides derived from sterically hindered binaphthalenetetracarboxylic dianhydride[J]. POLYMER CHEMISTRY,2020,11(25):4172-4179.
APA	Hu, Xiaofan.,Mu, Hongliang.,Miao, Jie.,Lu, Yao.,Wang, Xianwei.,...&Yan, Jingling.(2020).Synthesis and gas separation performance of intrinsically microporous polyimides derived from sterically hindered binaphthalenetetracarboxylic dianhydride.POLYMER CHEMISTRY,11(25),4172-4179.
MLA	Hu, Xiaofan,et al."Synthesis and gas separation performance of intrinsically microporous polyimides derived from sterically hindered binaphthalenetetracarboxylic dianhydride".POLYMER CHEMISTRY 11.25(2020):4172-4179.