This study explored the possibility of polymer interdiffusion for retaining thermoresponsive poly(N‐isopropylacrylamide) (pNIPAAm) on polycarbonate (PC). It was hypothesized that interdiffusion could be facilitated either by increasing the annealing temperature or by treating PC using air plasma (AP) and ultra‐violet ozone (UVO). The results showed that increasing annealing temperature only moderately improved pNIPAAm retention. Treating PC with AP led to an increase in surface‐active groups and a greatly enhanced retention of pNIPAAm. UVO treatment, however, severely damaged the PC layer with no noticeable enhancement on pNIPAAm retention. The retained pNIPAAm films on PC exhibited thermoresponsive behavior as evidenced by water contact angle and desired cell attachment/detachment behaviors. These results illustrate the simplicity of using polymer interdiffusion to successfully retain pNIPAAm films on a polymer, and the resulting substrates would be less expensive and more versatile than those retained on brittle supports (e.g., glass) for applications that require resilient thermoresponsive substrates.

中文翻译：

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通过聚合物互扩散在聚碳酸酯上保留聚（N-异丙基丙烯酰胺）薄膜

这项研究探索了聚合物互扩散保留热敏性聚（N聚碳酸酯（PC）上的（-异丙基丙烯酰胺）（pNIPAAm）。假设可以通过提高退火温度或通过使用空气等离子体（AP）和紫外线臭氧（UVO）处理PC来促进相互扩散。结果表明，提高退火温度只会适度提高pNIPAAm的保留率。用AP治疗PC可增加表面活性基团并大大提高pNIPAAm的保留率。然而，UVO处理严重破坏了PC层，而pNIPAAm保留却没有明显提高。PC上保留的pNIPAAm膜表现出热响应行为，如水接触角和所需的细胞附着/分离行为所证明。这些结果说明了使用聚合物互扩散将pNIPAAm膜成功保留在聚合物上的简单性，