Phase separation behavior of poly(ether imide)/ N , N ‐dimethyl acetamide/nonsolvent systems | Zendy

Shen LiQiang | Zendy; Xu ZhiKang | Zendy; Xu YouYi | Zendy

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Phase separation behavior of poly(ether imide)/ N , N ‐dimethyl acetamide/nonsolvent systems

Author(s) -

Shen LiQiang,

Xu ZhiKang,

Xu YouYi

Publication year - 2003

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.12188

Subject(s) - binodal , acetamide , polymer chemistry , imide , chemistry , cloud point , ether , chemical engineering , phase (matter) , materials science , organic chemistry , phase diagram , engineering , extraction (chemistry)

The phase separation behavior of a poly(ether imide) (PEI)/ N , N ‐dimethyl acetamide (DMAc)/nonsolvent system was investigated. Three kinds of nonsolvents were used in the study: H 2 O, ethanol, and acetic acid (AA). It was found that the three systems (PEI/DMAc/H 2 O, PEI/DMAc/ethanol, and PEI/DMAc/AA) agree with the linearized cloud point (LCP) relation. The binodal lines of the three systems were calculated according to the LCP relation. The binodal line of the PEI/DMAc/(H 2 O + DMAc) system was also calculated according to the LCP relation of the PEI/DMAc/H 2 O system. The phase separation of the PEI/DMAc/(H 2 O + AA) system was studied, and the results agree with the LCP relation. These results can offer useful information for the establishment of dope and coagulation media using for the fabrication of a PEI membrane. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 875–881, 2003

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