Levkin Pavel A, Svec Frantisek, Frechet Jean M J
College of Chemistry, University of California at Berkeley, Berkeley, CA 94720-1460, USA.
Adv Funct Mater. 2009 May 14;19(12):1993-1998. doi: 10.1002/adfm.200801916.
We present a facile and inexpensive approach to superhydrophobic polymer coatings. The method involves the in-situ polymerization of common monomers in the presence of a porogenic solvent to afford superhydrophobic surfaces with the desired combination of micro- and nano-scale roughness. The method is applicable to a variety of substrates and is not limited to small areas or flat surfaces. The polymerized material can be ground into a superhydrophobic powder, which, once applied to a surface, renders it superhydrophobic. The morphology of the porous polymer structure can be efficiently controlled by composition of the polymerization mixture, while surface chemistry can be adjusted by photografting. Morphology control is used to reduce the globule size of the porous architecture from micro down to nanoscale thereby affording a transparent material. The influence of both surface chemistry as well as the length scale of surface roughness on the superhydrophobicity is discussed.
我们提出了一种简便且经济的方法来制备超疏水聚合物涂层。该方法涉及在致孔溶剂存在下对常见单体进行原位聚合，以获得具有所需微米和纳米尺度粗糙度组合的超疏水表面。该方法适用于多种基材，不限于小面积或平面。聚合后的材料可研磨成超疏水粉末，一旦应用于表面，就能使其具有超疏水性。多孔聚合物结构的形态可通过聚合混合物的组成有效控制，而表面化学性质可通过光接枝进行调节。形态控制用于将多孔结构的小球尺寸从微米级减小到纳米级，从而得到一种透明材料。本文讨论了表面化学性质以及表面粗糙度的长度尺度对超疏水性的影响。
