The aging of plasma activated plasma polymer films has been studied to a limited extent, despite the recent application-oriented interest for these coatings. Therefore, the aging of plasma polymerized hexamethyldisiloxane (ppHMDSO) coatings that were subjected to helium or dry air plasma activation was investigated and compared to the aging of plasma activated silicone elastomer (S184) in this work. Water contact angle (WCA) measurements indicated that both materials reached a super-hydrophilic state after both plasma treatments. X-ray photoelectron spectroscopy (XPS) illustrated that this was the result of the introduction of a variety of oxygen-containing functionalities, while atomic force microscopy highlighted that the morphology was not significantly changed. The WCAs of the plasma activated ppHMDSO coating and S184 showed similar aging behavior, as the wettability of both materials significantly decreased. XPS measurements after 11 days of aging indicated that multiple aging processes were occurring in S184, while migration of oxidized short chain fragments was most important for the ppHMDSO coating. All these aged coatings could be silanized with 3-aminopropyltriethoxysilane, although differences in stability were observed. As such, this study provides additional insight in the chemical nature of activated plasma polymers and provides design principles for synthesizing plasma polymers with selective chemical functionalities.

尽管最近对这些涂层的应用导向兴趣，但在有限程度上研究了等离子体激活的等离子体聚合物薄膜的老化。因此，研究了经受氦气或干燥空气等离子活化的等离子聚合六甲基二硅氧烷 (ppHMDSO) 涂层的老化，并与本工作中等离子活化有机硅弹性体 (S184) 的老化进行了比较。水接触角 (WCA) 测量表明两种材料在两种等离子体处理后都达到了超亲水状态。X 射线光电子能谱 (XPS) 表明这是引入多种含氧官能团的结果，而原子力显微镜则表明形态没有显着变化。等离子活化 ppHMDSO 涂层和 S184 的 WCA 表现出相似的老化行为，因为两种材料的润湿性显着降低。老化 11 天后的 XPS 测量表明，S184 发生了多个老化过程，而氧化短链片段的迁移对于 ppHMDSO 涂层最重要。所有这些老化的涂层都可以用 3-氨基丙基三乙氧基硅烷进行硅烷化，尽管观察到稳定性存在差异。因此，本研究为活化等离子体聚合物的化学性质提供了额外的见解，并为合成具有选择性化学功能的等离子体聚合物提供了设计原则。而氧化的短链片段的迁移对于 ppHMDSO 涂层最重要。所有这些老化的涂层都可以用 3-氨基丙基三乙氧基硅烷进行硅烷化，尽管观察到稳定性存在差异。因此，本研究为活化等离子体聚合物的化学性质提供了额外的见解，并为合成具有选择性化学功能的等离子体聚合物提供了设计原则。而氧化的短链片段的迁移对于 ppHMDSO 涂层最重要。所有这些老化的涂层都可以用 3-氨基丙基三乙氧基硅烷进行硅烷化，尽管观察到稳定性存在差异。因此，本研究为活化等离子体聚合物的化学性质提供了额外的见解，并为合成具有选择性化学功能的等离子体聚合物提供了设计原则。