Bio-composites of ethylene-co-vinyl acetate (EVA) with chitosan (CS) and chitosan-g-PANi (CS-PANi) have been developed by using a melt-mixing process by varying the composition of fillers. Investigations on the degradation mechanism of thermoplastics lead to insights of their performance at high temperatures. The decomposition kinetics of the bio-composites was determined by plotting thermograms at different heating rates. The model-free Flynn-Wall-Ozawa and Kissinger method has been used to estimate the energy of activation (E_a) of the developed composites. The activation energies of EVA/CS composites lie between 162 and 209 kJ/mol and EVA/chitosan-g-PANi composites within the range of 145–256 kJ/mol. The variation in activation energy across the extent of conversion levels denotes multistep kinetics of degradation. The calculated E_a has been found to be in good agreement with the literature reports.

乙烯-共-醋酸乙烯酯 (EVA) 与壳聚糖 (CS) 和壳聚糖-g-PANi (CS-PANi) 的生物复合材料已通过使用熔融混合工艺通过改变填料的组成而开发。对热塑性塑料降解机制的研究有助于深入了解它们在高温下的性能。通过绘制不同加热速率下的热谱图来确定生物复合材料的分解动力学。无模型的 Flynn-Wall-Ozawa 和 Kissinger 方法已被用于估计活化能 (E _a) 开发的复合材料。EVA/CS 复合材料的活化能介于 162 和 209 kJ/mol 之间，EVA/壳聚糖-g-PANi 复合材料的活化能介于 145-256 kJ/mol 之间。转化水平范围内活化能的变化表示降解的多步动力学。已发现计算出的 E _a与文献报道非常吻合。