文献类型：期刊文献

英文题名：Construction of a superhydrophobic wood surface coating by layer-by-layer assembly: Self-adhesive properties of polydopamine

作者：Shao, Chuang[1,2] Jiang, Mingliang[1] Zhang, Jingpeng[1,2] Zhang, Qingshuo[1] Han, Liping[1] Wu, Yuzhang[2]

第一作者：Shao, Chuang

通信作者：Zhang, JP[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China

年份：2023

卷号：609

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20224413032300);Scopus(收录号：2-s2.0-85140775837);WOS:【SCI-EXPANDED(收录号:WOS:000882463300002)】；

基金：This work was financially supported by the "Fundamental Research Funds of the Research Institute of Forestry New Technology, Chinese Academy of Forestry CAF (CAFYBB2019SY029).

语种：英文

外文关键词：Wood; Superhydrophobic coating; Polydopamine (PDA); 1H; 2H; 2H-perfluoro-decyltrichlorosilane; (PFDTS); Layer-by-layer assembly

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 degrees. The particle size of nano-PDA, as measured by laser particle size analysis, remained in the range of 0.57-2.73 mu m. 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.