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采用裂解气相色谱-质谱联用技术对聚对苯二甲酸丙二醇酯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯进行分析研究。通过对试验条件的摸索,找出了一套较适宜的试验操作条件。在该条件下,其裂解产物通过HP-5高效毛细管色谱柱分离和质谱鉴定,得到了这3种聚酯各自结构的特征信息,并探讨了3种聚酯的热裂解机制。
The pyrolysis of poly (trimethylene terephthalate), poly (ethylene terephthalate) and poly (butylene terephthalate) were studied by pyrolysis gas chromatography-mass spectrometry. Through the exploration of the test conditions, a set of more suitable test operating conditions was found out. Under these conditions, the pyrolysis products of the three kinds of polyesters were characterized by HP-5 high performance capillary column and mass spectrometry. The pyrolysis mechanism of three kinds of polyesters was also discussed.