化工进展2013，Vol.32Issue(2)：441-445,5.DOI:10.3969/j.issn.1000-6613.2013.02.033
新型分子内复合抗氧剂清除自由基的性能
Free radical scavenging ability of a novel intramolecular complex antioxidant
摘要
Abstract
Radical scavenging ability of a novel intramolecular complex antioxidant towards 1,1-diphenyl-2-picrylhydrazyl (DPPH·) free radical was studied by uv-vis spectrophotometer, and compared with that of antioxidant BHT and antioxidant 1076. Results showed that the radical scavenging ability of the novel intramolecular complex antioxidant was superior to that of commercial antioxidants BHT and 1076. The scavenging ability increased with the increase of the concentration of the antioxidant, and the scavenging ability increased first and then kept constant afterwards. Temperature has little influence on the reaction rate, which showed that activation energy was lower and this reaction can proceed rapidly at room temperature. The antioxidation performance for polyethylene was evaluated by melt flow rate and oxidation induction time. Results also showed that the antioxidant ability of the synthesized complex antioxidant was superior to the commercial antioxidant BHT and 1076.关键词
DPPH自由基/分子内复合抗氧剂/清除自由基/氧化诱导期Key words
1,1-diphenyl-2-picrylhydrazyl free radical/ intramolecular complex antioxidant/ radical scavenging/ oxidation induction time分类
化学化工引用本文复制引用
李翠勤,王俊,魏宇佳,孟祥勇..新型分子内复合抗氧剂清除自由基的性能[J].化工进展,2013,32(2):441-445,5.基金项目
黑龙江省自然科学基金(B200820)和黑龙江省教育厅重点项目(125lz005). （B200820）
