- Kinetics of thermal degradation of poly(aryl ether)s containing phthalazinone and life estimation
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- 论文类型： 期刊论文
- 发表时间： 2010-06-01
- 发表刊物： 19th Annual Workshop and Exhibition of the Canadian-Thermal-Analysis-Society
- 收录刊物： SCIE、EI、CPCI-S
- 卷号： 100
- 期号： 3
- 页面范围： 1055-1062
- ISSN号： 1388-6150
- 关键字： Poly(aryl ether); Thermal degradation; Kinetics; Life estimation
- 摘要： New special engineering thermoplastics, poly(phthalazinone ether sulfone) (PPES) and poly(phthalazinone ether sulfone ketone) (PPESK), containing phthalazinone are synthesized through step-polymerization. The kinetics of thermal degradation of PPES and PPESK (1/1) in nitrogen is investigated at several heating rates by thermogravimetry (TG). It is concluded that, based on using Satava's theory, the thermal degradation mechanism of PPESK (1/1) is nucleation and growth, the order of reaction of the degradation process is one (n = 1). In contrast, the thermal degradation mechanism of PPES is a phase boundary controlled reaction and the order of the reaction is two (n = 2). The kinetic parameters, including reaction energy and frequency factor of thermal degradation reaction for PPES and PPESK (1/1) are analyzed using isoconversional Friedman, Kissinger-Akahira-Sunose (K-A-S) and Ozawa method. In addition, the study focus on the influence of heating rate and ratio of ketone/sulfone on thermal stability and the life estimation are described.
