超临界流体技术在PET解聚中的应用

Application of supercritical fluid technique in the degradation of PET waste

研究了ＰＥＴ在超临界甲醇中的解聚行为及温度、压力和反应时间对ＰＥＴ解聚率的影响， 发现ＰＥＴ 在超临界甲醇中可迅速地完全解聚。红外光谱检测解聚产物是纯度很高的对苯二甲酸二甲酯（ＤＭＴ）单体和乙二醇。

The degradation of poly(ethylene terephthalate)(PET) by use of supercritical methanol was studied, the degradation conditions of PET, such as temperature, pressure and the reaction time were investigated. The main products of PET supercritical methanolysis are dimethyl terephthalate(DMT) and ethylene glycol(EG).