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Synthesis, self-assembly of perfluoropolyether based ABA-triblock copolymers for superhydrophobic surface applications
Polymer ( IF 4.6 ) Pub Date : 2020-06-22 , DOI: 10.1016/j.polymer.2020.122732
Tiantian Gao , Xixi Gu , Shengtong Guo , Guiyou Wang

A series of poly (isobornyl methacrylate)–perfluoropolyether–poly (isobornyl methacrylate) (PIBOMA–PFPE–PIBOMA) triblock copolymers with a fixed PFPE block length and different PIBOMA block lengths are synthesized via atom transfer radical polymerization from a PFPE macroinitiator. The triblock copolymers can self-assemble into micelles with the PIBOMA core and PFPE corona in mixed 1,1,2-trichlorotrifluoroethane/N,N-dimethylformamide (F113/DMF) solvent. Hydrophobic surface can be obtained by evaporating the solvent in the prepared micelles at 23 °C. The surface hydrophobicity of films constructing from the prepared triblock copolymer micelles is successfully regulated by tuning the assembly morphologies through changing the volume ratio of F113/DMF and the chain length of PIBOMA blocks. In the films casting from the micelles at F113/DMF 1/1 (v/v) solvents, the micro-/nano-scale particle structures are coexisted on the surface, which leads to the formation of superhydrophobic surfaces with water contact angle (WCA) of 155° and sliding angle of 4°, as well as good self-cleaning performance. Meanwhile, the self-assembled surfaces show excellent superhydrophobic properties with a WCA of 155° and good corrosion resistance on cotton fabrics. These phenomena indicate that the PFPE-containing triblock copolymers have potential application prospects in superhydrophobic coatings.



中文翻译:

全氟聚醚基ABA-三嵌段共聚物的合成,自组装,用于超疏水表面应用

通过从PFPE大分子引发剂进行原子转移自由基聚合,合成了一系列具有固定PFPE嵌段长度和不同PIBOMA嵌段长度的聚甲基丙烯酸异冰片酯-全氟聚醚-甲基丙烯酸异冰片酯(PIBOMA-PFPE-PIBOMA)三嵌段共聚物。三嵌段共聚物可以在混合的1,1,2-三氯三氟乙烷/ N,N-二甲基甲酰胺(F113 / DMF)溶剂中与PIBOMA核和PFPE电晕自组装成胶束。疏水表面可以通过在23°C下蒸发制备的胶束中的溶剂来获得。通过改变F113 / DMF的体积比和PIBOMA嵌段的链长来调整组装形态,可以成功地调节由制备的三嵌段共聚物胶束构成的薄膜的表面疏水性。在以F113 / DMF 1/1(v / v)溶剂从胶束流延的薄膜中,微/纳米级颗粒结构共存于表面,这导致形成具有水接触角(WCA)的超疏水表面155°)和4°滑动角,以及良好的自清洁性能。同时,自组装表面显示出优异的超疏水性能,WCA为155°,并且在棉织物上具有良好的耐腐蚀性。这些现象表明含PFPE的三嵌段共聚物在超疏水涂料中具有潜在的应用前景。自组装表面显示出优异的超疏水性能,WCA为155°,并且在棉织物上具有良好的耐腐蚀性。这些现象表明含PFPE的三嵌段共聚物在超疏水涂料中具有潜在的应用前景。自组装表面显示出优异的超疏水性能,WCA为155°,并且在棉织物上具有良好的耐腐蚀性。这些现象表明含PFPE的三嵌段共聚物在超疏水涂料中具有潜在的应用前景。

更新日期:2020-08-05
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