Improvement of hydrophilic nature of polyester fabrics by atmospheric pressure plasma exposure

为了提高聚酯表面的亲水性，采用空气、氮气和氩气三种气源对聚酯表面进行常压等离子体（APP）处理。采用Wilhelmy法测定了APP未经处理和处理后的聚对苯二甲酸乙酯、PET、薄膜和纤维的接触角。结果发现，APP暴露后，润湿性和表面自由能急剧增加。APP曝光后，涤纶织物的吸湿性、去污性和可染性均有明显提高。PET纤维的x射线光电子能谱和原子力显微镜分析表明，PET织物实际性能的提高是由表面氧化和表面形貌变化引起的。与其他干燥方法（如紫外线处理）相比，APP暴露，特别是氮气暴露，更有效。

To enhance hydrophilic nature of polyester surfaces, atmospheric pressure plasma (APP) treatment with three gas sources, Air, nitrogen and argon, was carried out. The contact angles on the poly (ethylene terephthalate), PET, films and fibers untreated and treated by the APP was determined by the Wilhelmy method. As a result, the wettability and the surface free energy were found to increase drastically after the APP exposure. The water wicking, detergency and dyeability of the PET fabric were successfully enhanced after the APP exposure. X-ray photoelectron spectroscopy and atomic force microscopy of the PET fiber showed that the improvement of the practical performances of the PET fabric was caused by the surface oxidation and the surface topographical change. The APP exposure, especially with nitrogen gas, was found to be more effective compared with other dry process such as UV treatment.