Fabrication of superhydrophobic wood surface by a sol-gel process
Fabrication of superhydrophobic wood surface by a sol-gel process
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溶胶-凝胶法制备超疏水木材表面
DOI：
10.1016/j.apsusc.2011.08.100
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发表时间：
2011-11-01
影响因子：
6.7
通讯作者：
Wang, Chengyu
中科院分区：
文献类型：
--
作者：
Wang, Shuliang;Liu, Changyu;Wang, Chengyu
采用溶胶-凝胶法对1H，1H，2H，2H-全氟烷基三乙氧基硅烷(POTS)试剂进行氟化处理，制备了超疏水木材表面。用X射线衍射仪(X射线衍射仪)表征了木材表面二氧化硅纳米粒子的结晶类型，用扫描电子显微镜(SEM)和能谱仪(EDS)表征了超疏水木材表面的微观结构和化学组成，用傅立叶变换红外光谱(FT-IR)分析了纳米二氧化硅粒子与POTS试剂之间的结合力，用接触角(CA)测量了处理后样品的超疏水性能。分析表明，纳米二氧化硅微球均匀地堆积在木材表面，在纳米二氧化硅颗粒的高表面粗糙度和木材表面低表面自由能薄膜的共同作用下，木材表面的润湿性从亲水性转变为超疏水性，与水的接触角为164度，滑动角小于3度。(C)2011爱思唯尔B.V.保留所有权利。
The superhydrophobic wood surface was fabricated via a sol-gel process followed by a fluorination treatment of 1H, 1H, 2H, 2H- perfluoroalkyltriethoxysilanes (POTS) reagent. The crystallization type of silica nanoparticles on wood surface was characterized using X-ray diffraction (XRD), the microstructure and chemical composition of the superhydrophobic wood surface were described by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS), the bonding force between the silica nanoparticles and POTS reagent was analyzed by Fourier transform infrared spectroscopy (FT-IR) and the superhydrophobic property of the treated sample was measured by contact angle (CA) measurements. An analytical characterization revealed that nanoscale silica spheres stacked uniformly over the wood surface, and with the combination of the high surface roughness of silica nanoparticles and the low surface free energy film of POTS on wood surface, the wood surface has turned its wetting property from hydrophilic into superhydrophobic with a water contact angle of 164 degrees and sliding angle less than 3 degrees. (C) 2011 Elsevier B. V. All rights reserved.