Preparation and properties of hydrophobic and transparent wood

作     者：Linhu Ding Xiaoshuai Han Lian Chen Shaohua Jiang Linhu Ding;Xiaoshuai Han;Lian Chen;Shaohua Jiang

作者机构：Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesInternational Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China 

出 版 物：《Journal of Bioresources and Bioproducts》 (生物质资源与工程（英文）)

年 卷 期：2022年第7卷第4期

页      面：295-305页

核心收录：

学科分类：0907[农学-林学] 081704[工学-应用化学] 07[理学] 08[工学] 070303[理学-有机化学] 0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0817[工学-化学工程与技术] 0829[工学-林业工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0901[农学-作物学] 0702[理学-物理学] 

基　　金：support by National Natural Science Foundation of China(No.51803093) Natural Science Foundation of Jiangsu Provinc e(No.BK20180770) 

主　　题：Epoxy Hydrophobicity Perfluorodecyltriethoxysilane Transmittance Transparent wood 

摘      要：Natural wood(NW)was treated with sodium chlorite to obtain delignified wood(DW)in this study,then epoxy was impregnated to get transparent wood(TW),and finally the TW was coated with perfluorodecyltriethoxysilane(FAS)to acquire hydrophobic and transparent wood(HTW).The hydroxyl group generated by the hydrolysis of the FAS and the hydroxyl group of the epoxy underwent a dehydration condensation reaction to generate a Si-O-C bond,while the FAS molecules were also dehydrated and condensed to form a Si-O-Si bond according to Fourier transform infrared(FT-IR)spectroscopy and X-ray photoelectron spectroscopy(XPS).Therefore,the mechanical property and thermal stability of the HTW were better than the TW based on their tensile tests and thermogravimetric analysis(TGA).Due to the large reduction of hydroxyl in epoxy,the hydrophobicity of the HTW was greatly improved compared with the TW,and their contact angles were 113°and 77°,*** results of scanning electron microscopy(SEM)showed that epoxy was filled in the voids of *** addition,the coating of the FAS did not obviously reduce the transmittance,and the transmittance of the TW and HTW was 69%and 67%at 750 *** in all,the HTW has potential for application in transparent decoration.