Abstract Thermal degradation of green nanocomposite films prepared from poly (e-caprolactone) (PCL) and soy lecithin (SL)-modified bentonite (Bent) obtained by melt blending were studied through thermal degradation kinetics and molecular weight determinations by gel permeation chromatography (GPC). Kinetic of degradation processes were analyzed by dynamic thermogravimetric analysis (TGA). The apparent activation energies for the thermal degradation have been calculated using the kinetic methods of Friedman, Ozawa-Flynn-Wall, and Kissinger-Akahira-Sunose. Furthermore, a non-linear method was applied. The results showed that most of the used models were able to reproduce the experimental degradation behavior of PCL matrix, PCL/Bent and PCL/SL-Bent nanocomposites. The results from GPC and TGA demonstrated that the molecular weight of PCL was reduced by the presence of Bent-SL because SL acts as catalyzer of degradation reaction.

中文翻译：

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具有大豆卵磷脂改性膨润土填料的聚（ε-己内酯）纳米复合材料的热降解

摘要 通过热降解动力学和凝胶渗透色谱法 (GPC) 的分子量测定，研究了由聚ε-己内酯 (PCL) 和大豆卵磷脂 (SL) 改性膨润土 (Bent) 制备的绿色纳米复合薄膜的热降解。 ）。通过动态热重分析 (TGA) 分析降解过程的动力学。已使用 Friedman、Ozawa-Flynn-Wall 和 Kissinger-Akahira-Sunose 的动力学方法计算了热降解的表观活化能。此外，还应用了非线性方法。结果表明，大多数使用的模型都能够重现 PCL 基体、PCL/Bent 和 PCL/SL-Bent 纳米复合材料的实验降解行为。