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Phthalazinone-based copolymers with intrinsic microporosity (PHPIMs) and their separation performance
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论文类型: 期刊论文
发表时间: 2017-11-01
发表刊物: JOURNAL OF MEMBRANE SCIENCE
收录刊物: SCIE、EI
卷号: 541
页面范围: 403-412
ISSN号: 0376-7388
关键字: Intrinsic microporosity; Phthalazinone; Membrane; Permeability; Selectivity
摘要: A series of novel phthalazinone-based copolymers with intrinsic microporosity (PHPIMs) was successfully prepared by an aromatic double nucleophilic polycondensation reaction of a designed and synthesized, new rigid and twisty monomer, tetrahydroxyl-phthalazinone (TPHPZ), with 5,5', 6,6'-tetrahydroxy-3,3,3', 3'-tetramethyl-1,10-spirobisindane (TTSBI) and 2,3,5,6-tetrafluoroterephthalonitrile (TFTPN). These copolymers showed excellent solubility in common organic solvents, and were employed to prepared membranes. The gas transportation properties of the resultant membranes were also investigated. The thermal analysis, GPC characterization and 77 K nitrogen adsorption results indicated that all the copolymers exhibited excellent thermal stability, high molecular weight, and high BET surface areas ranging from 693 to 812 m(2)/g. The gas separation performance of the polymer membranes demonstrated that the ideal selectivity (alpha) of H-2/N-2, O-2/N-2, CO2/N-2 and CO2/CH4 gas pairs of the obtained PHPIMs exhibited an effective improvement, surpassing the 2008 Robeson plot for the gas pair CO2/CH4 and approaching the 2008 Robeson upper bound for gas pairs of H-2/N-2 and O-2/N-2, while accompanying with the decrease of the permeability for the increase of the polymer chain stiffness and the physical aging behaviors.

蹇锡高

教授   博士生导师   硕士生导师

性别: 男

毕业院校:大连工学院

学位: 硕士

所在单位:化工学院

学科:高分子材料. 高分子化学与物理. 膜科学与技术

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电子邮箱:jian4616@dlut.edu.cn

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