The interaction of a phenolic anti-oxidant and an aromatic amine in a thereto-oxidative ageing process
The interaction of a phenolic anti-oxidant and an aromatic amine in a thereto-oxidative ageing process
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DOI：
10.1016/s0141-3910(01)00241-5
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发表时间：
2002-01-01
影响因子：
5.9
通讯作者：
Lange, RFM
中科院分区：
文献类型：
--
作者：
Barret, J;Gijsman, P;Lange, RFM
观察到位阻酚类抗氧化剂 1,3,5-三甲基-2,4,6-三(3,5-二叔丁基-4-羟基苄基)-苯,1a 与芳香胺 4,4'-双(α,α-二甲基-苄基)二苯胺,2a 在共聚醚酯中的相互作用。通过使用各种分析技术，例如在聚醚模拟溶剂双(2-甲氧基乙基)醚中加热1a和/或2a，成功地分析了这种相互作用。 IR、HPLC-PDA、GC-FID、GC-MS 和 LC-MS。除了对各个抗氧化剂作用的详细了解外，研究还表明，氧化位阻酚类抗氧化剂的醌结构只有在没有自由基物质的情况下才稳定，这导致 1a-2a 系统稳定氧化 1a。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
An interaction of the sterically hindered phenolic anti-oxidant 1,3,5-trimethyl-2,4,6-Tris(3,5-di-t-butyl-4-hydroxybenzyl)-benzene, la with the aromatic amine 4,4'-bis(alpha,alpha-dimethyl-benzyl)diphenylamine, 2a in co-poly(ether esters) has been observed. This interaction is successfully analyzed by heating 1a and/or 2a in the polyether-mimicking solvent bis(2-methoxyethyl)ether using various analytical techniques, e.g. IR, HPLC-PDA, GC-FID, GC-MS and LC-MS. As well as a detailed insight of the action of the individual anti-oxidants, it has been shown that the quinone structure of the oxidized sterically hindered phenolic anti-oxidants are only stable in the absence of radical species, which results for the 1a-2a system in the stabilisation of the oxidized 1a. (C) 2002 Elsevier Science Ltd. All rights reserved.