A new model for the kinetic analysis of thermal degradation of polymers driven by random scission

被引：157

作者：

Sanchez-Jimenez, Pedro E. ^{[1
]}

Perez-Maqueda, Luis A. ^{[1
]}

Perejon, Antonio ^{[1
]}

Criado, Jose M. ^{[1
]}

机构：

[1] Univ Seville, CSIC, Inst Ciencia Mat Sevilla, Seville 41092, Spain

来源：

POLYMER DEGRADATION AND STABILITY | 2010年 / 95卷 / 05期

关键词：

Kinetics; Polymer degradation; Random scission; SOLID-STATE REACTIONS; POLY(METHYL METHACRYLATE); ANALYSIS CRTA; MECHANICAL DEGRADATION; STIMULATED PROCESSES; PARAMETERS; DECOMPOSITION; POLYETHYLENE; POLYSTYRENE; COPOLYMERS;

D O I：

10.1016/j.polymdegradstab.2010.02.017

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, a series of f(alpha) kinetic equations able to describe the random scission degradation of polymers is formulated in such a way that the reaction rate of the thermal degradation of polymers that go through a random scission mechanism can be directly related to the reacted fraction. The proposed equations are validated by a study of the thermal degradation of poly(butylene terephthalate) (PBT). The combined kinetic analysis of thermal degradation curves of this polymer obtained under different thermal pathways have shown that the proposed equation fits all these curves while other conventional models used in literature do not. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：733 / 739

页数：7

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