文献类型：期刊文献

英文题名：An in-depth study of molecular and supramolecular structures of bamboo cellulose upon heat treatment

作者：Lin, Qiuqin[1] Huang, Yuxiang[1] Yu, Wenji[1]

第一作者：Lin, Qiuqin

通信作者：Huang, YX[1]

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

年份：2020

卷号：241

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20202008659394);Scopus(收录号：2-s2.0-85084502530);WOS:【SCI-EXPANDED(收录号:WOS:000539100600003)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 31890771). The authors thank Professor Alfred D. French for providing the Maud software and its instructions.

语种：英文

外文关键词：Bamboo; Cellulose; Heat treatment; Molecular structure; Supramolecular structure; Hydrogen bonding system

摘要：In this study, two methods including a common method using high concentration of alkali solution and a mild extraction method at ambient conditions were used to extract cellulose from bamboo. The results showed that two methods affected the initial state of the cellulose. Celluloses obtained by the former was a hybrid of cellulose I and II while the latter was pure cellulose I. However, their heat treatment results indicated that the heat treatment (<= 200 degrees C) would not change the aggregation structure of bamboo cellulose, but it will cause the change of intramolecular and intermolecular hydrogen bonds, and the break of glycosidic bonds in the amorphous region and part of the crystalline region of cellulose. Accordingly, the crystallinity of bamboo cellulose will decrease slightly after heat treatment. Finally, the macroscopic morphology change of bamboo cellulose caused by heat treatment was the thermal expansion in the width direction instead of distort.