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首页> 外文期刊>Applied Surface Science >Surface oxidation of a Melinex 800 PET polymer material modified by an atmospheric dielectric barrier discharge studied using X-ray photoelectron spectroscopy and contact angle measurement
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Surface oxidation of a Melinex 800 PET polymer material modified by an atmospheric dielectric barrier discharge studied using X-ray photoelectron spectroscopy and contact angle measurement

机译：使用X射线光电子能谱和接触角测量研究了通过大气介电势垒放电改性的Melinex 800 PET聚合物材料的表面氧化

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摘要

Surface properties of a Melinex 800 PET polymer material modified by an atmospheric-pressure air dielectric barrier discharge (DBD) have been studied using X-ray photoelectron microscopy (XPS) and contact angle measurement. The results show that the material surface treated by the DBD was modified significantly in chemical composition, with the highly oxidised carbon species increasing as the surface processing proceeds. The surface hydrophilicity was dramatically improved after the treatment, with the surface contact angle reduced from 81.8° for the as-supplied sample to lower than 50° after treatment. Post-treatment recovery effect is found after the treated samples were stored in air for a long period of time, with the ultimate contact angles, as measured, being stabilised in the range 58-69° after the storage, varying with the DBD-treatment power density. A great amount of the C-O type bonding formed during the DBD treatment was found to be converted into the C=O type during post-treatment storage. A possible mechanism for this bond conversion has been suggested.
机译：已使用X射线光电子显微镜（XPS）和接触角测量技术研究了通过大气压空气介质阻挡放电（DBD）改性的Melinex 800 PET聚合物材料的表面性能。结果表明，用DBD处理的材料表面在化学成分上有显着改变，随着表面处理的进行，高度氧化的碳种类增加。处理后，表面亲水性显着提高，表面接触角从原样的81.8°降至处理后的50°以下。在将处理过的样品长时间保存在空气中后，可以发现处理后的恢复效果，最终的接触角（经测量）稳定在存储后的58-69°范围内，随DBD处理而变化功率密度。发现在DBD处理期间形成的大量C-O型键在后处理存储期间转化为C = O型。已经提出了这种键转换的可能机制。

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