Construction of Hydrophobic Wood Surface and Mechanical Property of Wood Cell Wall on Nanoscale Modified by Dimethyldichlorosilane

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Yang, Rui^1 ; Wang, Siqun^2 ; Zhou, Dingguo^1 ; Zhang, Jie^1 ; Lan, Ping^1 ; Jia, Chong^1

College of Materials Science and Engineering, Nanjing Forestry University, 159 Lonpan Road, Nanjing, Jiangsu

210037, China^1

Center for Renewable Carbon, University of Tennessee, 2506 Jacob Drive, Knoxville

TN

37996, United States^2

关键词: Dimethyldichlorosilane;    Hydrophobic mechanisms;    Nanoindentation tests;    Nanomechanical property;    Treatment time;    Water contact angle;    Wood cell walls;    Wood surfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012051/pdf
DOI  :  10.1088/1757-899X/301/1/012051

来源: IOP

【 摘 要 】

Dimethyldichlorosilane was used to improve the hydrophobicity of wood surface. The water contact angle of the treated wood surface increased from 85° to 143°, which indicated increased hydrophobicity. The nanomechanical properties of the wood cell wall were evaluated using a nanoindentation test to analyse the hydrophobic mechanism on the nano scale. The elastic modulus of the cell wall was significantly affected by the concentration but the influence of treatment time is insignificant. The hardness of the cell wall for treated samples was significantly affected by both treatment time and concentration. The interaction between treatment time and concentration was extremely significant for the elastic modulus of the wood cell wall.