文献类型：期刊文献

英文题名：Effects of heat treatment on surface physicochemical properties and sorption behavior of bamboo (Phyllostachys edulis)

作者：Zhang, Yamei[1] Yu, Yanglun[1,2] Lu, Yun[1] Yu, Wenji[1] Wang, Siqun[2]

第一作者：张亚梅

通信作者：Yu, YL[1]|[a0005b92a29b9f40edd99]余养伦;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiang Shan Rd, Beijing, Peoples R China;[2]Univ Tennessee, Ctr Renewable Carbon, 2506 Jacob Dr, Knoxville, TN 37996 USA

年份：2021

卷号：282

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000639114300037)】；

基金：This work was supported by the National Natural Science Foundation of China (grant number: 31700482).

语种：英文

外文关键词：Bamboo; Heat treatment; Surface physicochemical properties; Sorption kinetic properties; Dimensional stability

摘要：The bamboo heat treated at 180 degrees C attracts more and more attentions for bamboo modification in industries. The effects of 180 degrees C heat treatment on surface physicochemical properties and sorption kinetic properties of bamboo were studied systematically for optimizing application. The results showed that the heat treated (HT) bamboo had much lower moisture contents both in the fast and slow process, especially at high relative humidity (RH). Meanwhile, the surface wettability was decreased and the dimensional stability was improved after heat treatment. The reduced hydrophilic OH, C = O, and C-O groups of HT bamboo caused by the degradation of polysaccharides and thermal cross-linking of lignin led to the decreased hygroscopicity. Additionally, the changed hydrogen bonding types and amorphous region of cellulose in the HT bamboo also had an effect on the water sorption behavior of cellulose. The degradation of hemicellulose and more appearance of lignin on the cell wall surface were the main reasons for the decreased water sorption behavior and improved dimensional stability of HT bamboo, which made it more suitable for applying in building and construction materials. (C) 2021 Elsevier Ltd. All rights reserved.