Lyu Zhujun, An Qiufeng, Qin Pengwei, Li Weiwei, Wang Xiaoge
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology Xi'an Shaanxi 710021 China
RSC Adv. 2019 Feb 6;9(9):4765-4770. doi: 10.1039/c8ra10490e. eCollection 2019 Feb 5.
To design a mechanically stable and superhydrophobic coating, a polyhedral oligomeric silsesquioxane (POSS)-containing poly(perfluoropolyether)methacrylate (PFPEM) hybrid copolymer (PFPEM-POSS) was synthesized a free-radical solution polymerization with PFPEM, 1,1,2,2-perfluorooctyl acrylate, methyl (meth)acrylate, -butyl acrylate, hydroxypropyl acrylate, methacryloxy propyl trimethoxy silane, and methacrylisobutyl POSS; and azobisisobutyronitrile as an initiator. Hydrophobic coatings were formed on substrates by a facile one-step dip-coating method in a solution mixture of diethylene glycol dimethyl ether with the PFPEM-POSS hybrid copolymer. The chemical structure of the PFPEM-POSS copolymer and the surface morphology and performance of the PFPEM-POSS coatings were investigated. The results indicate that, under POSS aggregation the fluorophilic/oleophilic co-monomer phase separation and owing to the low-surface-energy poly(perfluoropolyether)methacrylate incorporated into the copolymer, PFPEM-POSS exhibited a hierarchical micro-nano roughness in atomic force microscopy observations and provided the treated substrates with excellent hydrophobicity and abrasion resistance. As a result, the water contact angle reached 152.3° on the treated glass.
为了设计一种机械稳定的超疏水涂层，通过自由基溶液聚合反应，以聚（全氟聚醚）甲基丙烯酸酯（PFPEM）、丙烯酸1,1,2,2 - 全氟辛酯、甲基（甲基）丙烯酸酯、丙烯酸丁酯、丙烯酸羟丙酯、甲基丙烯酰氧基丙基三甲氧基硅烷和甲基丙烯酰异丁基倍半硅氧烷（POSS）为原料，偶氮二异丁腈为引发剂，合成了一种含多面体低聚倍半硅氧烷（POSS）的聚（全氟聚醚）甲基丙烯酸酯（PFPEM）杂化共聚物（PFPEM - POSS）。在二甘醇二甲醚与PFPEM - POSS杂化共聚物的溶液混合物中，通过简便的一步浸涂法在基底上形成疏水涂层。研究了PFPEM - POSS共聚物的化学结构以及PFPEM - POSS涂层的表面形貌和性能。结果表明，在POSS聚集、亲氟/亲油共聚单体相分离以及由于低表面能的聚（全氟聚醚）甲基丙烯酸酯掺入共聚物的情况下，PFPEM - POSS在原子力显微镜观察中呈现出分级微纳粗糙度，并为处理后的基底提供了优异的疏水性和耐磨性。结果，处理后的玻璃上的水接触角达到了152.3°。
