摘要
通过红外、电子能谱等方法研究了由抗氧剂和光敏剂组成的复合光降解剂对聚乙烯光降解的影响,并对聚乙烯在光降解过程中分子量的变化进行了跟踪测定。研究结果表明,在聚乙烯光降解过程中存在诱导期,其长短主要决定于抗氧剂,而光敏剂则加速诱导期后的光降解。随光降解的进行,聚乙烯薄膜分子量变低并且表面氧化加剧。
The effect of multiple photodegradable consisted of antioxidant and photosensitizer on photodegradation of PE film was studied by IR, ESCA etc. , the molecular weights of PE during photodegradation were measured . The results showed that there was an inductive period during photodegradation , which was depended on antioxidant. The photosensitizer could accelerate the photodegradation after the inductive period. With the photodegradation proceeding, the molecular weights decreased and the surfacial oxidation increased.
出处
《现代塑料加工应用》
CAS
1997年第4期36-38,共3页
Modern Plastics Processing and Applications
关键词
聚乙烯薄膜
光降解剂
光降解
PE film
multiple photodegradable agent
inductive period
photodegradation
