Abstract A novel organic-inorganic zwitterionic polymer was developed via free radical copolymerization using quaternary ammonium salt as hydrophilic monomer. The unique structure realizes the perfect compromise between the hydrophobicity and hydrophilicity. The chemical composition, the physical properties, the anti-fog characteristic and mechanism of the zwitterionic acrylate coating were investigated by FT-IR, UV-VIS spectrometry, XPS, AFM and water contact angle. After anti-fogging test under ultralow temperature at −40 °C, the resultant zwitterionic acrylate polymer displays high transparency of 91 %, significantly better than that of the bare PC board 21 %. AFM images and water contact angle test demonstrate that the hydrophilic (the soft) region is continuously distributed on the surface of SMA-H coating with smaller water contact angle of 10°, indicates better hydrophilicity and wettability. The organic-inorganic zwitterionic polymer endows the coating on polycarbonate (PC) substrate with excellent anti-fog/frost performance, good adhesion and stability (repeated use for 100 times) under wider temperature range (−40 ∼ 80 °C) of applications.

中文翻译：

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一种用于高性能防雾涂层的新型有机-无机两性离子丙烯酸酯聚合物

摘要 以季铵盐为亲水单体，通过自由基共聚反应开发了一种新型有机-无机两性离子聚合物。独特的结构实现了疏水性和亲水性的完美平衡。通过FT-IR、UV-VIS光谱、XPS、AFM和水接触角研究了两性离子丙烯酸酯涂层的化学成分、物理性能、防雾特性和机理。在-40°C超低温下进行防雾测试，所得两性离子丙烯酸酯聚合物的透明度高达91%，明显优于裸PC板的21%。AFM图像和水接触角测试表明，亲水（软）区域连续分布在SMA-H涂层表面，水接触角较小，为10°，表明具有更好的亲水性和润湿性。有机无机两性离子聚合物使聚碳酸酯（PC）基材上的涂层在更宽的应用温度范围（-40~80°C）下具有优异的防雾/霜冻性能、良好的附着力和稳定性（可重复使用100次）。