超临界二氧化碳处理对聚酯纤维结构及其性能的影响

Effect of Supercritical CO2 Treatment on the Structure and Properties of PET Fibers

摘要: 用DSC、扫描电镜、X射线衍射、萨那蒙法对超临界二氧化碳处理聚酯纤维的熔点、表面形态结构、聚集态结构进行测定，并对处理后织物的收缩性能进行了分析探讨。实验结果表明：随着超临界二氧化碳处理温度、压力的提高，聚酯纤维的熔点、熔融热略有增加，纤维表面的低聚物增多，纤维的结晶度增加，取向度略有下降，同时聚酯织物的收缩率增加。预定型处理有助于提高聚酯纤维的热稳定性，降低二氧化碳处理对聚酯织物收缩率的影响。

Abstract: Melting point, morphology and structure of aggregating state of PET fibers were investigated through DSC, SEM, WAXS and orientation analysis before and after supercritical CO_2 dyeing. Shrinkage has been also studied. The results of the experiments indica