A Comparison of PE Surfaces Modified by Plasma Generated Neutral Nitrogen Species and Nitrogen Ions
A Comparison of PE Surfaces Modified by Plasma Generated Neutral Nitrogen Species and Nitrogen Ions
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等离子体产生的中性氮物种和氮离子改性 PE 表面的比较
DOI：
10.1023/a:1023942211714
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
F. Reniers
中科院分区：
文献类型：
--
作者：
John Wagner;Howard Fairbrother;F. Reniers
采用X射线光电子能谱（XPS）和接触角测量方法，比较了中性氮（基态和激发态N2以及原子N;改性氮等离子体处理）对聚乙烯（PE）的表面改性与氮离子轰击的效果。XPS结果表明，更大的氮浓度被接枝在改性的氮等离子体处理的PE，效果是由于在离子束改性过程中的表面溅射。含氮官能团的分布强烈依赖于处理策略;改性的氮等离子体处理主要导致在PE表面形成亚胺基团，而胺基是离子束改性过程中产生的主要物种。在PE的改性氮等离子体处理过程中的电子辐照的存在下，没有修改氮掺入的速率或改变所产生的含N官能团的性质，但确实导致接触角的系统性降低。
The surface modification of polyethylene (PE) by neutral nitrogen species (ground and excited state N2as well as atomic N; modified nitrogen plasma treatment) has been compared to the effect of nitrogen ion bombardment using X-ray Photoelectron Spectroscopy (XPS) and contact angle measurements. XPS results indicate that a greater nitrogen concentration was grafted during the modified nitrogen plasma treatment of PE, an effect that was attributed to surface sputtering during ion beam modification. The distribution of nitrogen-containing functionalities was strongly dependent upon the treatment strategy; the modified nitrogen plasma treatment lead predominantly to imine groups being formed at the PE surface, while amine groups were the dominant species produced during ion beam modification. The presence of electron irradiation during the modified nitrogen plasma treatment of PE did not modify the rate of nitrogen incorporation or change the nature of N-containing functional groups produced but did lead to a systematic decrease in contact angle.