Photostability and Performance of Polystyrene Films Containing 1,2,4-Triazole-3-thiol Ring System Schiff Bases
作者:Gassan Ali、Gamal El-Hiti、Ivan Tomi、Raghad Haddad、Alaa Al-Qaisi、Emad Yousif
DOI:10.3390/molecules21121699
日期:——
were confirmed. The synthesized Schiff bases were used as photostabilizers for polystyrene against photodegradation. Polystyrene polymeric films containing synthesized Schiff bases (0.5% by weight) were irradiated (λmax = 365 nm and light intensity = 6.43 × 10−9 ein·dm−3·s−1) at room temperature. The photostabilization effect of 1,2,4-triazole-3-thiols Schiff bases was determined using various methods
合成了一系列4-(4-取代亚苄基氨基)-5-(3,4,5-三甲氧基苯基)-4H-1,2,4-三唑-3-硫醇,并对其结构进行了确认。合成的席夫碱用作聚苯乙烯抗光降解的光稳定剂。在室温下辐照含有合成席夫碱(0.5% 重量)的聚苯乙烯聚合物薄膜(λmax = 365 nm 和光强度 = 6.43 × 10−9 ein·dm−3·s−1)。1,2,4-三唑-3-硫醇席夫碱的光稳定作用使用各种方法测定。与在不存在席夫碱的情况下获得的结果相比,所有使用的添加剂都增强了聚苯乙烯薄膜对辐照的光稳定性。席夫碱可以通过直接吸收紫外线辐射和/或自由基清除剂作为聚苯乙烯的光稳定剂。