含双组分光敏剂PE光氧化降解分子结构研究

STUDY ON PHOTO-OXIDATED DEGRADATION MOLECULAR STRUCTURE OF LDPE CONTAINING FeAcAc AND BAN

采用红外光谱、光电子能谱和荧光光谱研究了含双组分光敏剂聚乙烯光氧化降解的分子结构变化。结果表明聚乙烯分子中溶解反应氧是其光氧化降解反应的控制因素;酮、酸、酯等组分是其光氧化降解反应的主要产物;新的α、β不饱和羰基催化和加速光氧化降解反应,并降解程度不断加深。

The photo - oxidated degradation molecular structure of LDPE containing FeAcAc and BAN was studied by FT- IR, ESCA and FS. The experimental results showed that oxygen dissolved in LDPE was controlling factor of its photo - oxidated degradable reaction; ketone, carboxylic and ester etc. were majoy products of its photo - oxidated reaction and α, β unsaturated ketones accelerated photo - oxidated reaction itself, made the degradated degree of LDPE increasement.