Abstract

The kinetics of oxidation of methyl oleate in a microemulsion stabilized by Triton Х-100 has been studied. To generate peroxyl radicals, a lipid-soluble initiator 2,2'-azo-bis-isobutyronitrile was used. The oxidation of methyl oleate in the microemulsion was found to occur by the radical chain mechanism with quadratic-law chain termination. The optimum concentrations of surfactant and methyl oleate were determined. The initiation rate was measured and the oxidizability parameter of methyl oleate in the microemulsion was determined by the inhibitor method. The rate constants of the reaction of the peroxyl radical of methyl oleate with α-tocopherol and trolox (fk₇, L mol^–1 s^–1, 333 K) were measured: (2.9 ± 0.2) × 10⁴ and (4.0 ± 0.2) × 10⁴ , respectively.

中文翻译：

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用 Triton Х-100 稳定的微乳液中油酸甲酯氧化的动力学。I. 脂溶性引发剂 2,2'-偶氮双异丁腈

摘要

研究了由 Triton Х-100 稳定的微乳液中油酸甲酯的氧化动力学。为了产生过氧自由基，使用了脂溶性引发剂 2,2'-偶氮双异丁腈。发现微乳液中油酸甲酯的氧化是通过具有二次定律链终止的自由基链机制发生的。确定了表面活性剂和油酸甲酯的最佳浓度。通过抑制剂法测定引发速率并测定微乳液中油酸甲酯的氧化性参数。油酸甲酯过氧自由基与α-生育酚和trolox反应的速率常数（fk ₇ , L mol ^–1 s ^–1 , 333 K）被测量：（2.9±0.2）×10 ⁴和 (4.0 ± 0.2) × 10 ⁴分别。