Surface Treatment of Polypropylene Films Using Dielectric Barrier Discharge with Magnetic Field

• Published in: Plasma science & technology Vol. 14; no. 10; pp. 891 - 896
• Main Author: 王长全 张贵新 王新新 陈志宇
• Format: Journal Article
• Language: English
• Published: 01.10.2012
• Subjects: X-射线光电子能谱; XPS分析; 电介质阻挡放电; 聚丙烯薄膜; 表面处理; 表面粗糙度; 非均匀磁场; 非热等离子体
• ISSN: 1009-0630
• DOI: 10.1088/1009-0630/14/10/07

Atmospheric pressure non-thermal plasma is of interest for industrial applications. In this study, polypropylene （PP） films are modified by a dielectric barrier discharge （DBD） with a non-uniform magnetic field in air at atmospheric pressure. The surface properties of the PP films before and after a DBD treatment are studied by using contact angle measurement, atomic force microscopy （AFM） and X-ray photoelectron spectroscopy （XPS）. The effect of treatment time on the surface modification with and without a magnetic field is investigated. It is found that the hydrophilic improvement depends on the treatment time and magnetic field. It is also found that surface roughness and oxygen-containing groups are introduced onto the PP film surface after the DBD treatment. Surface roughness and oxygen-containing polar functional groups of the PP films increase with the magnetic induction density. The functional groups are identified as C-O, C=O and O-C=O by using XPS analysis. It is concluded that the hydrophilic improvement of PP films treated with a magnetic field is due to a greater surface roughness and more oxygen-containing groups.