In this paper, we report the surface activation of polycarbonate by linear dielectric barrier plasma treatment at one atmospheric pressure. Different analytical techniques were used to determine the changes in the surface characteristics of polycarbonate: Static and dynamic water contact angle examinations showed that the hydrophobicity of the surface decreased after being exposed to linear atmospheric pressure plasma; optical emission spectroscopy was used to identify the chemical species in the plasma before and after surface exposure; the variations in the surface morphology and chemical structure of polycarbonate were confirmed by atomic force microscopy and X-ray photoelectron spectroscopy. The latter clearly showed an increased surface concentration of oxygen-containing functional groups after linear atmospheric pressure plasma treatment. Our experimental results display the essential role of polar atmospheric contaminants in the interaction between linear plasma and a polycarbonate surface and demonstrate that the input plasma power can be tuned to tailor the final hydrophilicity of the polymeric material.

中文翻译：

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通过射频线性介质阻挡等离子体激活聚碳酸酯的表面特性

在本文中，我们报告了在一个大气压下通过线性介质阻挡等离子体处理对聚碳酸酯的表面活化。使用不同的分析技术来确定聚碳酸酯表面特性的变化：静态和动态水接触角检测表明，暴露于线性大气压等离子体后，表面的疏水性降低；使用光学发射光谱来识别表面暴露前后等离子体中的化学物质；通过原子力显微镜和 X 射线光电子能谱证实了聚碳酸酯表面形态和化学结构的变化。后者清楚地表明在线性大气压等离子体处理后含氧官能团的表面浓度增加。