扩散等离子体法增强聚丙烯非织造布亲水性研究

Study of increasing hydrophilicity of polypropylene nonwovens using diffusion plasma

运用扩散空气和氩气等离子体对聚丙烯非织造布进行表面改性实验。用朗缪尔双探针诊断等离子体的电子温度和电子密度随气压和等离子体放电功率的变化关系;改性结果用聚丙烯非织造布表面蒸馏水的接触角变化和X射线光电子能谱(XPS)表征,分析了改性后样品表面亲水性的时效性;利用扫描电子显微镜(SEM)对聚丙烯非织造布表面形貌进行了观察。结果表明,等离子体处理后的样品表面由于引入了C O,O C O等含氧基团,使聚丙烯非织造布表面的亲水性明显提高;空气等离子体处理样品的亲水性优于氩气等离子体处理的样品。

Diffusion air and argon plasma were used to modify the polypropylene nonwovens surface. Electron temperature and density, which were changing via pressure and discharge power, were diagnosed by Langmuir double probe. The plasma-modified surfaces are characterized by contact angle measurements and X-ray photoelectron spectroscopy （XPS）. Besides, the aging effect is studied. The modification of polypropylene nonwovens surface topography was observed by SEM micrograph. The result shows that the hydrophility of polypropylene nonwovens surface was increased obviously duo to the implantation of C=O , O-C=O . Air plasma was more effective than argon plasma in modifying the hydrophility of polypropylene nonwovens.