文献类型：期刊文献

英文题名：Enhancement of the physical and mechanical properties of wood using a novel organo-montmorillonite/hyperbranched polyacrylate emulsion

作者：Xu, Jianfeng[1] Li, Xiaoyan[1] Long, Ling[1] Liu, Ru[1]

第一作者：徐建峰

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

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

年份：2021

卷号：75

期号：6

起止页码：545-554

外文期刊名：HOLZFORSCHUNG

收录：;EI(收录号：20204509462854);Scopus(收录号：2-s2.0-85095447267);WOS:【SCI-EXPANDED(收录号:WOS:000672580200005)】；

基金：This study was financially supported by the National Natural Science Foundation of China (no. 31800470).

语种：英文

外文关键词：Cathay poplar (Populus cathayana Rehd.); emulsion; hyperbranched polyacrylate; organo-montmorillonite; Radiata pine (Pinus radiata D.Don); wood

摘要：In this work, a novel waterborne hyperbranched polyacrylate (HBPA) dispersed organo-montmorillonite (OMMT) emulsion was synthesized and used for the treatment of wood in a vacuum environment in order to enhance the physical and mechanical properties of the wood. The sapwood of Cathay poplar (Populus cathayana Rehd.) and Radiata pine (Pinus radiata D.Don) were used as the samples for experimentation. The results showed that the physical and mechanical properties of the wood improved significantly due to the successful penetration of the OMMT and HBPA into the wood cell wall. From it was also observed that OMET completely exfoliated from the HBPA matrix and formed a hydrophobic film covering on the inside walls of the cell lumen. Further, it was observed that the poplar sample displayed better mechanical properties than the pine sample because the pine has a more compact structure when compared to poplar and contains rosin. Furthermore, it was also observed that the mechanical properties of the modified wood sample gradually improved with an increase in the concentration of the emulsion. However, excessive concentration (>4 wt%) did not lead to further improvement.