Kinetics analysis of degradation of polynorbornene containing aryl or hetaryl azo dye

被引：7
|
作者：
Joraid, A. A. [1 ]
Abu-Sehly, A. A. [1 ]
Alamri, S. N. [1 ]
Al-Raqa, S. Y. [2 ]
Shipman, P. O. [3 ]
Shipley, P. R. [3 ]
Abd-El-Aziz, A. S. [3 ]
机构：
[1] Taibah Univ, Dept Phys, Madinah, Saudi Arabia
[2] Taibah Univ, Dept Chem, Madinah, Saudi Arabia
[3] Univ British Columbia Okanagan, Dept Chem, Kelowna, BC, Canada
来源：
THERMOCHIMICA ACTA | 2012年 / 529卷
关键词：
Degradation; Polymer kinetics; Differential scanning calorimetry; Non-isothermal study; MODEL-FREE METHOD; HYBRID GENETIC ALGORITHM; ACTIVATION-ENERGY; NONISOTHERMAL KINETICS; CONTAINING POLYMERS; THERMAL-ANALYSIS; DECOMPOSITION; SAMPLE; BIREFRINGENCE; POLYPROPYLENE;
D O I：
10.1016/j.tca.2011.11.007
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The Vyazovkin model-free method were applied to study non-isothermal degradation of an aryl and hetaryl azo dye-containing polynorbornene using a differential scanning calorimetric (DSC) technique. The samples were heated in nitrogen, with heating rates in the range 5-50K min(-1). The isoconversional method of Vyazovkin was used to determine the variation of the activation energy for degradation with temperature, E-alpha(T). The values of E-alpha(T) were found to be almost independent of temperature. The results of isoconversional methods used suggest that the transition follows a single-step kinetics reaction mechanism. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：22 / 24
页数：3
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