添加不同物質與聚氯乙烯(Poly vinyl chloride, PVC)進行共裂解是處理廢塑膠極具發展潛力的方向。本研究以熱重分析為基礎，探討氮氣環境下聚氯乙烯混合三種不同含鋅物質(氯化鋅、氧化鋅、ZIF-8)之共裂解行為及其裂解動力學。當系統內添加氯化鋅或是氧化鋅，能大幅降低脫除氯化氫的起始溫度及最大裂解速率溫度，而與ZIF-8混合則能促進裂解第二階段之進行，說明含鋅物質對聚氯乙烯的分解普遍具有活性。本研究也將熱重分析結果綜合熱裂解試驗對共裂解行為提出解釋，並且以曲線擬合法及FWO法計算活化能及其他動力學參數，普遍而言混合含鋅物質後，裂解第1階段、第2階段的活化能皆會降低20至100kJ/mol，另外其反應級數也維持在1~2的區間，代表聚氯乙烯與含鋅物質的共裂解仍由聚氯乙烯裂解行為主導。

This work investigates the pyrolysis behavior and the degradation kinetics of PVC and its mixture with ZnCl2, ZnO, and ZIF-8 under nitrogen atmosphere. The thermogravimetric analysis results were combined with the lab-scale pyrolysis test to explain the co-pyrolysis behavior, and the activation energy and other kinetic parameters were calculated by the curve fitting method and the FWO method. Generally speaking, thermogravimetric analysis results show that these zinc-containing substances have a great effect on PVC degradation. In addition, the activation energy of each stage will be reduced by 20-100kJ/mol. The reaction order of all kinds of system is in the range of 1 to 2, which means the co-pyrolysis behavior is still dominated by the PVC pyrolysis behavior.

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