Center for Research and Education on Macromolecules, University of Liège, Sart Tilman, Bat. B6a, 4000 Liège, Belgium.
Langmuir. 2011 Jan 4;27(1):335-42. doi: 10.1021/la102808w. Epub 2010 Dec 9.
Superhydrophobic aluminum surfaces with excellent corrosion resistance were successfully prepared by electrospinning of a novel fluorinated diblock copolymer solution. Micro- and nanostructuration of the diblock copolymer coating was obtained by electrospinning which proved to be an easy and cheap electrospinning technology to fabricate superhydrophobic coating. The diblock copolymer is made of poly(heptadecafluorodecylacrylate-co-acrylic acid) (PFDA-co-AA) random copolymer as the first block and polyacrylonitrile (PAN) as the second one. The fluorinated block promotes hydrophobicity to the surface by reducing the surface tension, while its carboxylic acid functions anchor the polymer film onto the aluminum surface after annealing at 130 °C. The PAN block of this copolymer insures the stability of the structuration of the surface during annealing, thanks to the infusible character of PAN. It is also demonstrated that the so-formed superhydrophobic coating shows good adhesion to aluminum surfaces, resulting in excellent corrosion resistance.
通过电纺新型氟化两亲嵌段共聚物溶液，成功制备出具有优异耐腐蚀性的超疏水铝表面。嵌段共聚物涂层的微纳结构化是通过电纺获得的，这证明电纺是一种简单且廉价的制备超疏水涂层的方法。该两亲嵌段共聚物由聚（十七氟癸基丙烯酸酯-共-丙烯酸）（PFDA-co-AA）无规共聚物作为第一嵌段和聚丙烯腈（PAN）作为第二嵌段组成。氟化嵌段通过降低表面张力来提高表面疏水性，而其羧酸官能团在 130°C 退火后将聚合物膜锚定在铝表面上。该共聚物的 PAN 嵌段确保了表面结构化在退火过程中的稳定性，这要归功于 PAN 的不熔特性。研究还表明，形成的超疏水涂层对铝表面具有良好的附着力，从而具有优异的耐腐蚀性。
