Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (8): 32-36.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Ternary Polymerization and Thermal Degradation Kinetics of N-Phenylmaleimide-Styrene-Maleic Anhydride

Wang Zhai-rain  Pi Pi-hui  Wen Xiu-fang  Cheng Jiang  Yang Zhuo-ru   

  1. School of Chemical and Energy Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-10-27 Online:2006-08-25 Published:2006-08-25
  • Contact: 王斋民(1978-)，男，博士生，主要从事高分子材料的研究 E-mail:wangzhaimin@163.com
  • About author:王斋民(1978-)，男，博士生，主要从事高分子材料的研究
  • Supported by:

    广东省自然科学基金资助项目(031422)

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Abstract:

N-phenylmaleimide.styrene.maleic anhydride copolymer(NSMA)was synthesized and the structure of the copolymer was characterized using FTIR.The heat resistance and thermal degradation kinetics of the copolymer were then analyzed by means of TG,DTG and DSC techniques,with the corresponding thermal degradation mechanism being also investigated.The results illustrate that(1)the thermal degradation process of NSMA accords with the single mechanism and its initial thermal degradation temperature is 637 K;(2)the thermal degradation basical-ly ends at 761 K,the rate of which rapidly increases with the temperature from 683 to 703 K;(3)the copolymer shows a weight loss of 20% and 50% in N2 respectively at 679 and 700K,and is of a glass transition temperature of 485 K with DSC curve,(4)the apparent activation energy and pre-exponential of NSMA degraded in non-iso-therm al condition are respectively verified by Kissinger equation as 173.21 kJ/mol and 3.2939 x 1012 min-1 ;and (5)the reaction order is determined as 0．94 according to the Crane theory．

Key words: terpolymer, N-phenylmaleimide, styrene, maleic anhydride, therm al degradation, kinetics, heat resistance