Effect of morphology on the photooxidation of polypropylene films

F.P. La Mantia, G. Spadaro, D. Acierno
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引用次数: 10

Abstract

Photooxidative degradation of polypropylene films with different morphology (degree of crystallinity and orientation) has been followed by means of mechanical tests. The kinetics of the photooxidation are significantly depressed on increasing crystallinity and especially orientation.

This behaviour has been interpreted in terms of the reinforcing action due to the oriented crystalline fibrils.

A correlation has been attempted between the photooxidative kinetics and a morphological parameter.

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形态对聚丙烯薄膜光氧化的影响
采用力学试验的方法对不同形态(结晶度和取向)的聚丙烯薄膜进行了光氧化降解。随着结晶度的增加,特别是取向的增加,光氧化动力学明显受到抑制。这种行为被解释为由于取向结晶原纤维的增强作用。试图在光氧化动力学和形态参数之间建立一种相关性。
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