材料科学
涂层
接触角
复合材料
图层(电子)
胶粘剂
表面能
超疏水涂料
三氯氢硅
X射线光电子能谱
表面粗糙度
粒子(生态学)
逐层
化学工程
硅
工程类
海洋学
冶金
地质学
作者
Chuang Shao,Mingliang Jiang,Jingpeng Zhang,Qing Shuo Zhang,Lu Han,Yuzhang Wu
标识
DOI:10.1016/j.apsusc.2022.155259
摘要
To prevent moisture deformation, water swelling, severe mildewing, and decay due to the biodegradation of wood during outdoor use, a superhydrophobic wood surface coating was prepared by a layer-by-layer assembly method using polydopamine (PDA) and 1H,1H,2H,2H-perfluoro-decyl trichlorosilane (PFDTS). Due to its self-adhesive properties, PDA was used as an intermediate layer to connect the wood and PFDTS. PDA was first deposited on the wood surface to form a highly crosslinked granular structure that improved the surface roughness of wood. The wood surface was further modified by low-surface-energy PFDTS, and the wood after PDA deposition was superhydrophobic with a water contact angle (WCA) of 154°. The particle size of nano-PDA, as measured by laser particle size analysis, remained in the range of 0.57–2.73 μm. The surface morphologies of PFDTS/PDA coatings on glass plates were detected by EDF 3D microscopy, FE-SEM, and AFM. The bonding mechanism between coating components and wood surfaces was investigated by energy-dispersive spectroscopy, FT-IR spectroscopy, and X-ray photoelectron spectroscopy. The hydrophobic coating underwent rapid restoration and was resistant to both acidic and alkaline solutions (pH 2–12). This work provides a simple way to endow superhydrophobic properties to wood and has potential multifunctional applications for wood protection and new products.
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