摘要
分别制备了含有FeSt3、CeSt4、ReSt3的光降解LDPE,通过测定降解过程中LDPE的力学性能、羰基指数、分子量和结晶度的变化规律,研究了以上三种光降解剂对LDPE光降解的影响。结果表明,随着光照时间的增长,LDPE的力学性能变差、分子量减小、羰基指数和结晶度增大;三种光降解剂对LDPE光降解的促进效果依次为FeSt3>CeSt4>ReSt3。
Photodegradable LDPE containing FeSt3, CeSt4 and ReSt3 as photosensitizers were prepared. The effect of the three photosensitizers on the LDPE was studied by measuring the mechanical property, the carbonyl index, molecular weight and the crystallinity. With the lasting illumination, the mechanical property and the molecular weight decreased; the carbonyl index and the crystallinity increased, The accelerating effect of the three photosensitizers is as follows： FeSt3〉CeSt4〉ReSt3
