采用简单溶剂/非溶剂法制备出超疏水性聚丙烯薄膜。该薄膜表面与水的接触角为160°,滚动角小于4°。pH值为1～14的水溶液在其表面都有很高的接触角。通过对表面进行扫描电子显微镜分析可知,薄膜具有类鸟巢状多孔微纳米复合微观结构,这种结构可捕获空气,形成水与基底之间的气垫,对表面超疏水性的产生起到了关键的作用。用Cassie理论进行了分析,结果表明,约9%的面积是水滴和基体接触,而有约91%的面积是水滴和空气接触。
A simple solvent/non-solvent method has been developed for fabricating the superhydrophobic polypropylene film.The resulted film shows ultra-hydrophobicity with a high contact angle（160°） and low sliding angle（less than 4°）.Moreover,the surface shows high contact angles,larger than 150°,for all the solutions with pH ranging from 1 to 14.Scanning electron microscopy images shows a kind of bird-nest-like and micro/nano binary structure on the as-fabricated polypropylene surface,which can trap air and form air cushion between water and the surface.Thus this micro/nano hierarchical structure plays an important role in the formation of the superhydrophobicity.The superhydrophobic phenomenon of the prepared surface has been analyzed according to Cassie theory,and it is proposed that only about 9% of the water contact surface is contacted with the substrate and the rest 91% is contacted with the air cushion.
参考文献
| [1] | Zhang JL;Li JA;Han YC .Superhydrophobic PTFE surfaces by extension[J].Macromolecular rapid communications: Publishing the newsletters of the European Polymer Federation,2004(11):1105-1108. |
| [2] | Lin Feng;Shuhong Li;Yingshun Li;Huanjun Li;Lingjuan Zhang;Jin Zhai;Yanlin Song;Biqian Liu;Lei Jiang;Daoben Zhu .Super-Hydrophobic Surfaces: From Natural to Artificial[J].Advanced Materials,2002(24):1857-1860. |
| [3] | Shirtcliffe NJ.;McHale G.;Newton MI.;Perry CC. .Intrinsically superhydrophobic organosilica sol-gel foams[J].Langmuir: The ACS Journal of Surfaces and Colloids,2003(14):5626-5631. |
| [4] | Xi Zhang;Feng Shi;Xi Yu;Huan Liu;Yu Fu;Zhiqiang Wang;Lei Jiang;Xiaoyuan Li .Polyelectrolyte Multilayer as Matrix for Electrochemical Deposition of Gold Clusters: Toward Super-Hydrophobic Surface[J].Journal of the American Chemical Society,2004(10):3064-3065. |
| [5] | Ning Zhao;Qiongdan Xie;Lihui Weng;Shengqing Wang;Xiaoyan Zhang .Superhydrophobic Surface from Vapor-Induced Phase Separation of Copolymer Micellar Solution[J].Macromolecules,2005(22):8996-8999. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%