ON THE AGING OF OXYGEN PLASMA-TREATED POLYDIMETHYLSILOXANE SURFACES
ON THE AGING OF OXYGEN PLASMA-TREATED POLYDIMETHYLSILOXANE SURFACES
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DOI：
10.1016/0021-9797(90)90038-p
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发表时间：
1990-06-01
影响因子：
9.9
通讯作者：
JOHNSON, D
中科院分区：
文献类型：
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作者：
MORRA, M;OCCHIELLO, E;JOHNSON, D
氧等离子体处理的聚二甲基硅氧烷表面在低能量（空气）和高能量（水）介质中老化。处理后的样品，其特征在于使用组合的表面敏感技术：X射线光电子能谱，静态二次离子质谱，和接触角测量。等离子体处理导致处理样品的表面张力大幅增加。当在空气（低表面能介质）中老化时，样品返回到低表面张力的情况。其机理是极性基团在本体中的扩散掩埋和通过等离子体处理和随后的交联形成的硅烷醇基团的缩合的组合。当在水中进行老化时，保持了高的表面张力。
Oxygen plasma-treated polydimethylsiloxane surfaces were aged in a low-energy (air) and in a high-energy (water) medium. Treated samples were characterized using a combination of surface-sensitive techniques: X-ray photoelectron spectroscopy, static secondary ion mass spectroscopy, and contact angle measurements. Plasma treatments cause large increases in surface tension of treated samples. When aged in air (low-surface-energy medium) the samples returned to a low-surface-tension situation. The mechanism was a combination of diffusive burial of polar groups in the bulk and condensation of silanol groups formed by plasma treatment and consequent crosslinking. When aging was performed in water, a high surface tension was maintained.