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Thermal analysis of solution copolymers of styrene with N-phenylmaleimide

✍ Scribed by Guodong Liu; Xiucuo Li; Liucheng Zhang; Xiongwei Qu; Pange Liu; Liting Yang; Jungang Gao

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
153 KB
Volume
83
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Free‐radical–initiated copolymerization of N‐phenylmaleimide (NPMI) with styrene (St) at 110°C in a toluene solution initiated by AIBN was carried out by a semibatch method. The compositions of the copolymers were determined by using an elemental analyzer. The glass‐transition temperatures of the copolymers were measured by differential scanning calorimetry. All the semibatch copolymers show a single glass‐transition temperature that increases markedly with increasing NPMI content in the copolymers. The thermal stabilities of the copolymers were studied by using a programmed thermogravimetric analysis technique. Copolymers show a considerable increase in thermal stability and different degradation reaction mechanisms with increasing content of NPMI. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 417–422, 2002

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