An Alternative Strategy to Obtain Cellulose Nanofibrils from Parenchyma Cellulose of Bagasse Pith and the Performance of Its Nanopaper  

作　　者：Tian Tan Xiaoning Tang Heng Zhang Xin Gao 

机构地区：[1]Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming,Yunnan Province,650500,China [2]CAS Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo,Zhejiang Province,315201,China

出　　处：《Paper And Biomaterials》2022年第2期18-26,共9页造纸与生物质材料（英文）

基　　金：The authors are grateful for the financial support from the National Natural Science Foundation of China(Grant No.51963012);Special Foundation for Excellent Youth Scholars of Yunnan Province,China(Nos.YNWR-QNBJ-2020-039 and YNWR-QNBJ-2020-045).

摘　　要：Cellulose nanofibrils(CNFs)were obtained through one-step mechano-partial dissolution by ball milling in N,N-dimethyl acetamide with a low concentration of LiCl from agricultural waste bagasse pith(BP).Compared with fibrous cellulose,parenchyma cellulose(PC)is less uniform in diameter and less aligned,causing PC to dissociate into CNFs during this process without pretreatment.The results showed that the CNFs prepared from PC of BP had a diameter of 30-200 nm and a length of several micrometers.The as-obtained CNFs,along with dissolved cellulose,formed a wet-stable and highly transparent nanopaper in a sorbitol aqueous solution bath,which exhibited a high strain of 101%and a low Young's modulus of 4.3 MPa owing to the addition of the plasticizer sorbitol.This type of nanopaper with favorable transparency,high tensile property,and low Young's modulus has great potential for use as electronic skin and medical dressing material.

关 键 词：cellulose nanofibrils parenchyma cellulose bagasse pith partial dissolution tensile strength Young's modulus 

分 类 号：TS724[轻工技术与工程—制浆造纸工程]