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Structure effect of benzofuranone on the anti‐oxidation kinetics in polypropylene
Author(s) -
Cai Zhi,
Meng Xin,
Shen Benxian,
Xin Zhong
Publication year - 2010
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.499
Subject(s) - polypropylene , kinetics , activation energy , chemistry , oxidative phosphorylation , oxygen , methyl group , polymer chemistry , polymer , group (periodic table) , organic chemistry , biochemistry , physics , quantum mechanics
Benzofuranone compounds are used as chain‐breaking antioxidants in the melt processing of polymers owing to their strong hydrogen donating ability. In this article, the structural effects of benzofuranone compounds on anti‐oxidation in polypropylene (PP) were evaluated using oxidation onset temperature (OOT) of PP stabilised by the compounds in oxygen and the oxidation kinetics of the PP was studied using Ozawa and Kissinger methods, respectively. The results show that benzofuranone compounds inhibit the oxidative degradation of PP by increasing the oxidation activation energy, and the higher the oxidation activation energy of PP, the better the anti‐oxidation activity of benzofuranone in PP. Furthermore, the anti‐oxidation activity of benzofuranone compounds in PP is weakened by the methyl group in the 2′‐position. Compared to benzofuranone compounds OXBF1 and TBF1 without 2′‐position methyl group, PP stabilised by benzofuranone compound MXBF1 with 2′‐position methyl group has lower OOT values and smaller oxidation activation energy. Copyright © 2010 Curtin University of Technology and John Wiley & Sons, Ltd.