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One‐pot synthesis of polyetherimides from bis(chlorophthalimide) and dichlorodiphenylsulfone in diphenylsulfone
Author(s) -
Shang Zhenping,
Lü Changli,
Zhao Jianying,
Yan Jingling,
Ding Mengxian,
Gao Lianxun
Publication year - 2006
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.25051
Subject(s) - glass transition , solubility , amorphous solid , materials science , solvent , polymer chemistry , copolymer , chemical engineering , polymer , chemistry , organic chemistry , composite material , engineering
Polyetherimides and copolymers have been synthesized in one pot from bis(chlorophthalimide), dichlorodiphenylsulfone, and bisphenolate using diphenylsulfone as the solvent. The inherent viscosities of the obtained polyimides are in the range of 0.32–0.72 dL/g, and the structures of polyimides were confirmed by IR and elemental analyses. All of the polyimides have good solubility in common organic solvents. The 5% weight‐loss temperatures of the polyimides were 429–507°C in air. The glass transition temperatures ( T g ) of 4,4′‐(9‐fluorenylidene) diphenol‐based polyimides are in the range of 253–268°C. The T g of bisphenol A‐based polyimides is in the range of 198–204°C, while the T g change inconspicuously when the ratios of diphenylsulfone increase. The wide‐angle X‐ray diffraction showed that all polyimides prepared are amorphous. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 4584–4588, 2006