文献类型：期刊文献

英文题名：Chemical Structure and Mechanical Properties of Wood Cell Walls Treated with Acid and Alkali Solution

作者：Xu, Enguang[1] Wang, Dong[1] Lin, Lanying[1]

第一作者：Xu, Enguang

通信作者：Lin, LY[1]

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

年份：2020

卷号：11

期号：1

外文期刊名：FORESTS

收录：;EI(收录号：20200508108645);Scopus(收录号：2-s2.0-85078520813);WOS:【SCI-EXPANDED(收录号:WOS:000513184500087)】；

基金：This research was supported by the "National Natural Science Foundation of China" (No. 31770597), and "The program from the China Scholarship Council" (No. 201803270009).

语种：英文

外文关键词：acid and alkali treatment; delignification; confocal Raman microscopy (CRM); nanoindentation; XRD

摘要：The mechanical properties of individual fibers are related to the production and performance of papers and fiberboards. This paper examines the behavior of the microstructure constituents of wood subjected to acid and alkali treatments. The chemical structure and mechanical properties of wood cell walls with different acid or alkali treatments was analyzed. The results show that, compared with acid treatment, the crystal size and crystallinity index of cellulose increased after alkali treatment, resulting in an increase in the cell wall elastic modulus. The mechanical properties of the wood cell wall S-2 region were higher than those of the compound middle lamella (CML) region. There was a topochemical effect between the CML and the S-2 region in acid and alkali-treated samples, which provided a major threshold that facilitates the production/separation of wood fibers for better strength fiber properties.