An ABC triblock copolymer based on poly(dimethylsiloxane)–poly(tert-butyl acrylate)–poly(methacrylolsobutyl POSS) is synthesized via combination of SET-LRP and ATRP from a PDMS macroinitiator. The resulting polymer can readily self-assemble into hierarchical structures through a stepwise “bottom-up” strategy, i.e. self-assembly followed by the nonsolvent vapor-induced phase separation. When a mixture of dichloromethane/dimethylformamide (DCM/DMF) is used as the casting solvent, the resulting surface (SHS) exhibits superhydrophobicity with a high water contact angle (156.7 ± 0.5°) and a low roll-off angle (<9°), and it also displays good self-cleaning property. Moreover, under the dichloromethane/methanol (DCM/MeOH) condition, a porous structure with intertwined networks of nano globules could be formed. Further infusion of the PDMS lubricant leads to the formation of a transparent slippery coating (SLIPS) with excellent water repellency, manifested by a low water contact angle hysteresis (∼3°) and a small sliding angle (∼6°). The SLIPS show excellent antifouling properties that effectively inhibit the attachment of P. aeruginosa ATCC 15692 as compared to that of the structured hydrophobic surfaces and cured PDMS surfaces.

中文翻译：

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杂化ABC三嵌段共聚物的自组装形成的超疏水和光滑的注液多孔表面及其防污性能†

通过SETMS-LRP和ATRP的组合，由PDMS大分子引发剂合成了一种基于聚二甲基硅氧烷-聚丙烯酸叔丁酯-聚甲基丙烯酸羟丁酯的ABC三嵌段共聚物。所得的聚合物可以通过逐步的“自下而上”策略轻松地自组装成分层结构，即自组装，然后进行非溶剂气相诱导的相分离。当使用二氯甲烷/二甲基甲酰胺（DCM / DMF）的混合物作为浇铸溶剂时，所得表面（SHS）具有超疏水性，具有高水接触角（156.7±0.5°）和低滚落角（<9° ），并且还显示出良好的自洁性能。此外，在二氯甲烷/甲醇（DCM / MeOH）条件下，可以形成具有缠结的纳米球网络的多孔结构。进一步注入PDMS润滑剂会导致形成具有优异斥水性的透明滑爽涂层（SLIPS），表现为低的水接触角滞后（〜3°）和小的滑动角（〜6°）。SLIPS具有出色的防污性能，可有效抑制铜绿假单胞菌的附着 与结构化疏水性表面和固化的PDMS表面相比，ATCC 15692。