Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
Langmuir. 2010 Mar 2;26(5):3024-30. doi: 10.1021/la100094y.
Polymer/ceramic composite films with micro- and nanocombined hierarchical structures are fabricated by electron irradiation of poly(methyl methacrylate) (PMMA) microspheres/silicone grease. Electron irradiation induces volume contraction of PMMA microspheres and simultaneously transforms silicone grease into a ceramic material of silicon oxycarbide with many nanobumps. As a result, highly porous structures that consist of micrometer-sized pores and microparticles decorated with nanobumps are created. The fabricated films with the porous hierarchical structure exhibit good superhydrophobicity with excellent self-cleaning and antiadhesion properties after surface treatment with fluorosilane. In addition, the porous hierarchical structures are covered with silicon oxycarbide, and thus the superhydrophobic coatings have high hardness and strong adhesion to the substrate. The presented technique provides a straightforward route to producing large-area, mechanically robust superhydrophobic films on various substrate materials.
通过电子辐照聚甲基丙烯酸甲酯（PMMA）微球/硅脂制备具有微纳复合分级结构的聚合物/陶瓷复合薄膜。电子辐照诱导 PMMA 微球体积收缩，并同时将硅脂转化为具有许多纳米凸包的硅氧碳陶瓷材料。结果，形成了由具有纳米凸包的微米级孔和微颗粒组成的高度多孔结构。经过氟硅烷表面处理后，制备的具有多孔分级结构的薄膜表现出良好的超疏水性，具有优异的自清洁和抗粘性。此外，多孔分级结构被硅氧碳覆盖，因此超疏水涂层具有高硬度和对基底的强附着力。所提出的技术为在各种基底材料上制备大面积、机械坚固的超疏水薄膜提供了一种简单直接的途径。
