In an atmosphere containing oxygen, polymers are oxidized, partially degraded, and crosslinked. The exposure of a polymer to oxygen is characterized by an induction period during which the polymer does not show any obvious changes and there is no evidence of oxygen absorption. This period is ...
The evaluation of the non-isothermal kinetic parameters of the thermal and thermo-oxidative degradation of polymers and polymeric materials: its use and abuse The methods of evaluation of the non-isothermal kinetic parameters of the thermal and thermo-oxidative degradations of polymers and polymeric ma...
Thermo-oxidative Degradation of Polymers By T. R. Crompton The oxidative and thermal degradation of polymers has very important implications on their suitability for particular end-user applications. Particularly in relation to their physical properties and the lifetime over which the manufactured article...
S. spacecraft and airplanes were investigated from the point of view of oxidative thermal stability and toxicity of possible volatile oxidation products. To this end, methods of thermal analysis (dta, tga, dtg) were applied to study the oxidation profiles of five different groups of polymers in...
Oxidative degradation and stabilisation of polymers 来自 Taylor & Francis 喜欢 0 阅读量: 30 作者: Al-Malaika, S. 摘要: The aim of this review is to present a coherent treatment of the fundamental aspects of the science that underpins current technological practices, and future advances, in ...
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This paper summarizes data available so far on the progress made in the study of photooxidative degradation of polymers by HO., HO2. radicals generated during the photolysis of H2O2, FeCl3, and Fenton (FeCl3-H2O2 and FeCl3-H2O) reagents. Experimental results obtained in our laboratories with tw...
The kinetics of decomposition of the polycyanates have been studied and the apparent energies of activation for the over-all process of breakdown of the polymers and for the formation of carbon dioxide in degradation in vacuo have been determined. It was found that moisture present in the ...
Oxidative degradation of commercial grade ABS (Acrylonitrile-butadiene-styrene) resin powders was studied by thermal analysis. The instabilities of ABS con... Duh, Yih-Shing,Ho, Ta-Cheng,Chen, Jenq-Renn,... - 《Polymers》 被引量: 8发表: 2010年 Chemiluminescence in evaluating the thermal oxida...
It is known that the thermooxidative degradation of polymers only occurs in less ordered domains, because the crystalline phase is not permeable for oxygen.‘1~12 The higher stability of PA46 is probably due to its higher crystallinity and/or density of the amorphous phase leading to a lower ...