利用低温等离子体处理实现聚酰亚胺纤维表面改性

摘要

采用空气辉光低温等离子体技术对聚酰亚胺(PI)纤维进行表面改性,利用扫描电镜(SEM)、X射线光电子能谱仪(XPS)等方法探讨了改性前后纤维表面形态结构和组成的变化.实验表明,通过低温等离子体处理后,纤维表面产生了不同程度的溅射刻蚀和化学微刻蚀,纤维表面摩擦系数、亲水性都有了明显提高;X射线光电子能谱分析表明,经等离子体处理后,纤维表面被刻蚀并且增加了极性基团和纤维表面价键峰(O1s/C1s)比例所致.不同处理条件下的聚酰亚胺(PI)纤维的断裂强力和断裂伸长率也做了讨论.%The performance of the polyimide (PI) fiber was investigated by low temperature glow discharge plasma in this paper. According to observe of scanning electron microscope (SEM), the surface roughness degree of PI fiber increase after treated by low temperature plasma. The experimental results show that under the treatment of different plasma conditions, the PI fiber surfaces appear the varying degree physics and chemical etching. It's found that the friction coefficient and hydrophilicity of PI fiber treated by low temperature plasma improve obviously. X-ray photoelectron spectroscopy (XPS) shows that the reason is the etching and the increase of the ratio O1s/C1s, on the surface of PI fiber. Variations of tensile breaking strength of PI with different parameters are analyzed.