用甜菜碱为有机改性剂对蒙脱土(MMT)进行有机改性,使其变为有机蒙脱土(O-MMT),并采用熔融插层法制备了聚乙烯/有机蒙脱土(PE/O-MMT)复合材料.通过特性黏度分析了不同含量有机改性蒙脱土的聚乙烯/有机蒙脱土复合材料样品膜在人工加速老化实验下的光降解特性,并采用扫描电镜分析了有机蒙脱土含量为0%和4%的聚乙烯/有机蒙脱土复合膜表面形貌.结果表明:有机改性蒙脱土(O-MMT)能有效提高聚乙烯的光降解稳定性.
Abstract
Organic montmorillonite(O-MMT) was formed through the way that betaine ions exchanged with Na+ in montmorillonite.Then the PE/O-MMT composites were synthesized through melt intercalation and processed by the photo-oxidation degradation in artificially accelerated aging oven.The intrinsic viscosities of the PE in the composites films which contained different contents of O-MMT were analyzed respectively and the Scanning Electron Microscopy(SEM) was used to analysis the morphology of PE/O-MMT composites films containing 0%,4% O-MMT.The results indicated that the photo-oxidation degradation stability of the PE in the composites films was higher than that of pure polyethylene film.
关键词
聚乙烯 /
有机蒙脱土 /
光降解
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Key words
polyethylene /
organic montmorillonite /
photo-oxidation degradation
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中图分类号：
TB33
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脚注
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基金
国家自然科学基金资助项目(29964001)
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