Angle‐resolved XPS study of the effect of x‐radiation on the aging of polystyrene exposed to an oxygen/argon plasma
Angle‐resolved XPS study of the effect of x‐radiation on the aging of polystyrene exposed to an oxygen/argon plasma
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X 辐射对暴露于氧/氩等离子体的聚苯乙烯老化影响的角分辨 XPS 研究
DOI：
10.1002/sia.1155
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发表时间：
2002
影响因子：
1.7
通讯作者：
R. Paynter
中科院分区：
文献类型：
--
作者：
R. Paynter
将旋涂到玻璃上的聚苯乙烯薄膜暴露于氧/氩等离子体中。等离子体处理后 2、24 和 92 小时，通过角分辨 X 射线光电子能谱 (ARXPS) 表征聚苯乙烯表面氧的深度分布。研究发现，随着时间的推移，氧从表面流失，主要来自CO，尤其是OCOO基团，并且ARXPS测量期间暴露于X射线加速了这种流失。在 92 小时标记处，发现聚苯乙烯表面的氧含量与水接触角之间呈线性负相关。讨论了用于解释 ARXPS 数据的三种模型的相对优点。版权所有 © 2002 约翰威利父子有限公司
Polystyrene films spin‐coated onto glass were exposed to an oxygen/argon plasma. The depth profile of the oxygen in the polystyrene surface was characterized by angle‐resolved x‐ray photoelectron spectroscopy (ARXPS) 2, 24 and 92 h following the plasma treatment. It was found that oxygen was lost from the surface over time, mainly from C O and especially O CO O groups, and that the exposure to x‐rays during the ARXPS measurement accelerated this loss. At the 92 h mark, a linear, negative correlation was found between the oxygen content of the polystyrene surface and the water contact angle. The relative merits of the three models used to interpret the ARXPS data are discussed. Copyright © 2002 John Wiley & Sons, Ltd.