Effect of hydrogen donating ability of benzofuranone on the antioxidant activity
Effect of hydrogen donating ability of benzofuranone on the antioxidant activity作者机构:State Key Laboratory of Chemical Engineering and Product Engineering Department School of Chemical Engineering East China University of Science and Technology Shanghai 200237 China
出 版 物:《Chinese Science Bulletin》 (Chinese Science Bulletin)
年 卷 期:2010年第55卷第1期
页 面:27-31页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学] 0703[理学-化学] 070301[理学-无机化学]
基 金:supported by the National Natural Science Foundation of China (Grant No 20806023) East China University of Science and Technology (Grant No YA0157107)
主 题:苯并呋喃酮 抗氧化活性 能力 氢 氧化诱导时间 抗氧化作用 化合物 聚丙烯
摘 要:The rate constants for the hydrogen donation of three 3-aryl-benzofuranone compounds with tert-butoxyl radicals have been cal-culated through laser flash photolysis (LFP) technique, which were used to evaluate the hydrogen donating abilities of those 3-aryl-benzofuranone compounds. The antioxidant activities of those 3-aryl-benzofuranone compounds in polypropylene (PP) have been studied using the oxidation induction time (OIT) of PP stabilized by those 3-aryl-benzofuranone compounds too. It has been found that the methyl group on the 2 -position can prevent the hydrogen donation of 3-aryl-benzofuranone with tert-butoxyl radicals and weakens the antioxidant activity of 3-aryl-benzofuranone in the oxidation of PP, i.e., the greater is the hydrogen do-nating ability of 3-aryl-benzofuranone with radicals, the better is the antioxidant activity of 3-aryl-benzofuranone in the oxidation of PP in the presence of oxygen.