One-pot synthesis of polyetherimides from bis(chlorophthalimide) and dichlorodiphenylsulfone in diphenylsulfone

• Published in: Journal of applied polymer science 2006-12, Vol.102 (5), p.4584-4588
• Main Authors: Shang, Zhenping, Lü, Changli, Zhao, Jianying, Yan, Jingling, Ding, Mengxian, Gao, Lianxun
• Format: Article
• Language: English
• Subjects: Applied sciences; bis(chlorophthalimide); dichlorodiphenylsulfone; diphenylsulfone; Exact sciences and technology; one-pot synthesis; Organic polymers; Physicochemistry of polymers; polyetherimide; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.25051

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 (Tg) of 4,4′‐(9‐fluorenylidene) diphenol‐based polyimides are in the range of 253–268°C. The Tg of bisphenol A‐based polyimides is in the range of 198–204°C, while the Tg 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