含螺吡喃的氟化聚丙烯酸酯疏水涂层的制备及光致变色行为,Langmuir

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含螺吡喃的氟化聚丙烯酸酯疏水涂层的制备及光致变色行为
Langmuir ( IF 3.7 ) Pub Date : 2018-11-28 00:00:00 , DOI: 10.1021/acs.langmuir.8b03229
Yan Yang , Ting Zhang ₁ , Jiajin Yan , Liuwa Fu , Hongping Xiang , Yanyan Cui , Jiahui Su , Xiaoxuan Liu

Affiliation

在这项研究中，使用氟和SP型丙烯酸单体为原料，通过乳液聚合制备了含螺吡喃（SP）的氟化聚丙烯酸酯（F-PA–SP）胶乳。傅立叶变换红外和¹1 H NMR表明已成功合成了F-PA-SP共聚物，动态光散射和透射电子显微镜分析表明，合成的胶乳具有约200 nm的均匀粒径。使用X射线光电子能谱，原子力显微镜和水接触角（WCA）分析来研究F-PA-SP涂层的表面性能，并证明通过添加氟化丙烯酸单体可增强其疏水性。通过紫外/可见光谱研究了该涂层的光致变色性能，结果表明，与使用氟化聚丙烯酸酯/ SP共混物制备的涂层相比，F-PA-SP涂层在紫外/可见光照射下具有更好的光响应性，抗疲劳性和光可逆性乳胶。而且，F-PA–SP涂层的UV / vis辐照的WCA表现出最小的变化，并保留了其优异的疏水性。最后，将F-PA-SP乳胶应用于纤维素纸，所得的光致变色纸具有出色的可逆颜色变化和疏水性。

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Preparation and Photochromic Behavior of Spiropyran-Containing Fluorinated Polyacrylate Hydrophobic Coatings

In this study, spiropyran (SP)-containing fluorinated polyacrylate (F-PA–SP) latex was prepared by emulsion polymerization using fluorinated and SP-based acrylic monomers as raw materials. Fourier transform infrared and ¹H NMR demonstrate that the F-PA–SP copolymer has been successfully synthesized, and dynamic light scattering and transmission electron microscopy analyses indicate that the synthesized latex has presented a uniform particle size of approximately 200 nm. X-ray photoelectron spectroscopy, atomic force microscopy, and water contact angle (WCA) analyses were used to investigate the surface properties of the F-PA–SP coating and demonstrate that its hydrophobicity is enhanced by the addition of a fluorinated acrylic monomer. The photochromic properties of the coating were investigated by UV/vis spectroscopy, and the results reveal that the F-PA–SP coating possesses better photoresponsiveness, fatigue resistance, and photoreversibility under UV/vis irradiation than the coating prepared using fluorinated polyacrylate/SP blended latex. Moreover, the WCA of the F-PA–SP coating subjected to UV/vis irradiation shows minimal changes and retains its excellent hydrophobicity. Finally, the F-PA–SP latex was applied to cellulosic paper, and the resulting photochromic paper exhibits outstanding reversible color changes and hydrophobicity.

更新日期：2018-11-28

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