文献类型：期刊文献

英文题名：Insights into structure and properties of cellulose nanofibrils (CNFs) prepared by screw extrusion and deep eutectic solvent permeation

作者：Yan, Ming[1] Tian, Chaochao[1] Wu, Ting[3] Huang, Xingyu[1] Zhong, Yidan[1] Yang, Pei[1] Zhang, Lili[1] Ma, Jinxia[1] Lu, Hailong[2] Zhou, Xiaofan[1]

第一作者：Yan, Ming

通信作者：Zhou, XF[1];Lu, HL[2]

机构：[1]Nanjing Forestry Univ, Coll Light Ind & Food, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Jiangsu Prov Key Lab Pulp & Paper Sci & Technol, Nanjing 210037, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Natl Engn Lab Biomass Chem Utilizat,Key Lab Bioma, Key & Open Lab Forest Chem Engn,State Adm Forestr, 16 Suojinwucun Rd, Nanjing 210042, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Jiangsu Prov Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China

年份：2021

卷号：191

起止页码：422-431

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;Scopus(收录号：2-s2.0-85115637832);WOS:【SCI-EXPANDED(收录号:WOS:000710522700001)】；

基金：We are grateful for financial support from the fellowship of China Postdoctoral Science Foundation ( 2020M671505 ) and Postgraduate Research &Practice Innovation Program of Jiangsu Province ( KYCX21_0884 , SJCX18_0320 ).

语种：英文

外文关键词：Cellulose nanofibrils; Deep eutectic solvent; Screw extrusion; Solvent properties; High yield; Thermal stability

摘要：To achieve the balance on economy and ecology, it is indispensable to explore the greener and more inexpensive method for the production of cellulose nanofibrils (CNFs). Herein, a deep eutectic solvent (DES) system based on choline chloride (ChCl) and ethylene glycol (EG) was employed as the swollen solvent, combining with screw extrusion and permeant, to fabricate unmodified CNFs with high yield and thermal stability. The proposed method in this work was simple, convenient, and industrially viable. The hydrous DESs were applied in the process of CNFs preparation and dispersion to reduce the cost and viscosity of DES. To reveal the principle of CNFs preparation, the impact of sulfuric acid and water content of DES system on the chemical, physical, morphological, thermal, and dispersive properties of CNFs was systematically studied. Properties of the dispersed solvents were characterized by solvatochromic parameters and viscosity parameters to evaluate the potential influence on the preparation and dispersion of CNFs. In general, this work would play valuable guidance in realizing the preparation and dispersion of CNFs via a versatile DES solvent system, thus endowing cellulose materials high-value utilization.