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Phase separation and theta-compositions of PPES/NMP/non-solvent systems
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发布时间: 2019-03-10
发布时间:2019-03-10
论文类型:期刊论文
发表时间:2005-05-01
发表刊物:JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
收录刊物:ISTIC、EI、SCIE、Scopus
卷号:21
期号:3
页面范围:430-432
ISSN号:1005-0302
关键字:polymer precipitation curve; poly (phthalazinone ether sulfone); theta-composition
摘要:Poly (phthalazinone ether sulfone) (PPES) with 1:1 and 1:3 ratios of bisphenol A (BPA) unit to phthalazinone unit were selected as samples. Polymer precipitation curves for the ternary systems PPES (1:1)/NMP/ non-solvent and PPES (1:3)/NMP/non-solvent were determined by a titration method. Comparison between two sets of data is made. Non-solvents used were H2O, ethyl ether (EE), diethylene glycol (DEGC), ethyleneglycol methylether (EGME) and butanone (130). NMP/non-solvent theta-com positions for PPES (1:1) and PPES (1:3) were also estimated. It was found that the volume ratio of non-solvent to NMP at the property mutation or worsening of PPES membrane is close to the theta-com position.

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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