文献类型：期刊文献

英文题名：Fabrication of pondcypress fiber with intact structure and multiple active hydroxyl groups by alkali aided two-step mechanical refining

作者：Zou, Xiuxiu[1] Shen, Kuizhong[1] Liang, Long[1] Wang, Jia[2] Huang, Chen[1,2] Wu, Ting[1] Wu, Yiqiang[3] Fang, Guigan[1,2]

第一作者：Zou, Xiuxiu

通信作者：Fang, GG[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China;[3]Cent South Univ Forestry & Technol, Sch Mat Sci & Engn, Changsha 410004, Peoples R China

年份：2021

卷号：28

期号：11

起止页码：6829-6843

外文期刊名：CELLULOSE

收录：;EI(收录号：20212310469994);Scopus(收录号：2-s2.0-85107314372);WOS:【SCI-EXPANDED(收录号:WOS:000656410500001)】；

基金：This work was supported by the National Natural Science Foundation of China (31890771), the Foundation of Key Lab. of Biomass Energy and Material, Jiangsu Province (No.JSBEM-S-201909), and National Natural Science Foundation for Youth (32001273).

语种：英文

外文关键词：Chemical impregnation; Two-step mechanical refining; Cellulose accessibility; Intact spatial structure

摘要：Due to the compact tissue structure and stable molecule structure of plant fiber, converting fiber into high value-added products in current biomass utilization is still challenging, which restricts the application of many fiber-based composite materials. Herein, chemical impregnation and two-step mechanical refining (1st mechanical refining and 2nd mechanical refining) were proposed to solve this problem. The pondcypress (taxodiutn ascendens) fibers containing multiple surface active sites were prepared, based on the degradation and dissociation effects of alkaline hydrogen peroxide (AHP) and disc milling. The prepared fibers showed the intact spatial structure with excellent cellulose accessibility. It was found that the degradation of lignin and hemicellulose (excluding glucan) was 12.09% and 60.45%, respectively, at the optimized dosage of 10% H2O2 and 17.5% NaOH, in which the treated fibers remained high cellulose content. As expected, the cellulose accessibility was increased from 6.42% (raw fiber) to 47.26% after the treatment. Significantly, the treated fibers displayed higher specific surface area and active hydroxyl content (1.49 x 10(-3) mol/g) due to the exposure of internal cell wall. This makes decomposed fibers an interesting candidate of ideal carrier for fiber composite.