高分子受阻胺对顺1,4-聚丁二烯溶液光敏降解过程的稳定作用

PHOTOSTABILISING EFFECT OF POLYMERIC HINDERED AMINE STABLLIZER IN PHOTOSENSITIZED DEGRADATION OF CIS-1.4-POLY (BUTADIENE)

本文研究了高分子受阻胺光稳定剂苯乙烯4-(甲基丙烯酸)-2,2,6,6-四甲基哌啶醇酯共聚物在用罗丹明6G光敏氧化降解顺1,4-聚丁二烯过程中的稳定作用。它具有淬灭单线态氧、分解过氧化氢以及捕获大分子自由基的能力,对其光稳定机理也进行了初步的讨论。

The photostabilising effect of polymeric hindered amine stabilizer (styrene-2,2,6,6-tetrame-thyl-4-piperidinyl mathacrylate copolymer) have been investigated in rhodamine 6G photosensitized degradation of cis-1,4-poly (butadiene). It have been found that the polymeric hindered amine stabilizer have properties of quenching singlet oxygen, decomposing hydroperoxide and scavenging macro-radicals produced during photooxidation and effectively protects cis-1,4-poly (butadiene) against singlet oxygen oxidation.The mechanism of photostabilization has been discussed.