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应用红外衰减全反射法（ＩＲ－ＡＴＲ）考察了聚对苯二甲酸乙二酯（ＰＥＴ）三维卷曲中空纤维在加工过程中的结构和取向的变化。结果表明，此种ＰＥＴ中空纤维中，其羰基倾向垂直于纤维表面的取向
The structure and orientation of three-dimensional polyethylene terephthalate (PET) three-dimensional crimped hollow fiber during processing were investigated by IR-ATR. The results show that in the PET hollow fiber, its carbonyl tends to be perpendicular to the fiber surface orientation