文献类型：期刊文献

英文题名：Synergistic effect of montmorillonite/lignin on improvement of water resistance and dimensional stability of Populus cathayana

作者：Liu, Min[1] Yi, Qirui[1] Li, Jingyu[1] Ma, Erni[1] Liu, Ru[2]

第一作者：Liu, Min

通信作者：Ma, EN[1];Liu, R[2]|[a0005be6e90476f57c0e3]刘如;

机构：[1]Beijing Forestry Univ, MOE Key Lab Wooden Mat Sci & Applicat, Beijing Key Lab Wood Sci & Engn, Qinghua Eastrd 35, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2019

卷号：141

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000496611800058)】；

基金：This research was funded by Fundamental Research Funds for the Central Universities of China (No. 2015ZCQ-CL-01, 2019JQ03012) and National Natural Science Foundation of China (No. 31800470).

语种：英文

外文关键词：Wood modification; Montmorillonite; Industrial alkali lignin; Water resistance; Dimensional stability

摘要：Natural modifiers have become an excellent choice for wood modification. In this study, industrial alkali lignin and organic-montmorillonite (OMMT) were synergistically applied to enhance the water resistance and dimensional stability of fast-growing wood. Specifically, the renewable and eco-friendly industrial alkali lignin was used to not only increase the interplanar lattice spacing (d-spacing) of OMMT, but also together with OMMT improve the hydrophobicity of wood. The poplar (Populus cathayana) samples were sequentially impregnated with OMMT and industrial alkali lignin via a two-step method to produce OMMT/lignin combined treatment on wood. The scanning electron microscopy-energy dispersive X-ray spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy were applied to investigate the interaction between modifiers and the modified samples. Furthermore, the static contact angle, water absorption, moisture adsorption, and dimensional stability of the treated samples were evaluated. After two-step impregnation, OMMT and lignin were found to fill in the cell lumens and be adhered to the cell walls, and the d-spacing increased from 1.25 rim to 2.90 nm. As a result, the surface hydrophobicity, water resistance and dimensional stability of OMMT/lignin-treated wood were improved compared with the untreated group.