The effect of γ-irradiation on the structure and properties of Poly(propylene)/clay nanocomposites

被引：21
|
作者：
Touati, Naima [1 ]
Kaci, Mustapha [1 ]
Ahouari, Hania [1 ]
Bruzaud, Stephane [2 ]
Grohens, Yves [2 ]
机构：
[1] Univ Abderrahmane Mira Bejaia, Fac Sci & Sci Ingn, Lab Mat Organ, Bejaia 06000, Algeria
[2] Univ Bretagne Sud, Lab Polymeres Proprietes Interfaces & Composites, F-56321 Lorient, France
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2007年 / 292卷 / 12期
关键词：
clay; degradation; gamma-irradiation; nanocomposites; poly(propylene) (PP);
D O I：
10.1002/mame.200700260
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The oxidative degradation of PP/OMMT nanocomposites under gamma-irradiation was studied. Changes in structure and properties resulting from gamma-exposure in the range 0-100 kGy were investigated. The results were analyzed by comparing the influence of PP-g-MA and pristine OMMT on the oxidation kinetics of neat PP. gamma-Irradiation in the presence of air strongly degraded the properties of PP materials, particularly for radiation doses above 20 kGy. The rate of oxidative degradation of PP/OMMT/PP-g-MA nanocomposites was much faster than that of neat PP. This suggests that PP-g-MA and pristine OMMT components behave as oxidation catalysts, leading to the formation of free radicals in the polymer matrix.
引用
收藏
页码：1271 / 1279
页数：9
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