文献类型：期刊文献

英文题名：An Energy-Efficient One-Pot Swelling/Esterification Method to Prepare Cellulose Nanofibers with Uniform Diameter

作者：Song, Yang[1,2] Chen, Wei[2] Niu, Xun[2] Fang, Guigan[3] Min, Huihua[4] Pan, Hui[1,2]

第一作者：Song, Yang

通信作者：Pan, H[1];Pan, H[2]

机构：[1]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Jiangsu, Peoples R China;[2]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China;[4]Nanjing Forestry Univ, Electron Microscope Lab, Nanjing 210037, Jiangsu, Peoples R China

年份：2018

卷号：11

期号：21

起止页码：3714-3718

外文期刊名：CHEMSUSCHEM

收录：;EI(收录号：20184305971246);Scopus(收录号：2-s2.0-85055059686);WOS:【SCI-EXPANDED(收录号:WOS:000449952200004)】；

基金：The authors are grateful for financial support from the National Key Basic Research Program of China (2017YFD0601005), the Forestry Industry Research Special Funds for Public Welfare Projects of China (201504602), the project of the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions, China and Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP) of China (PPZY2015C221).

语种：英文

外文关键词：biomass; cellulose; green chemistry; ionic liquids; nanostructures

摘要：An energy-efficient method has been developed to prepare 3-5 nm-wide carboxyl-functionalized cellulose nanofibers (CNFs) from pulp fiber by a simple one-pot swelling followed by esterification process. Tetrabutylammonium acetate (TBAA)/dimethyl sulfoxide (DMSO) binary solvent is used as the swelling agent and the esterification medium admixed with maleic anhydride. All steps are performed at room temperature and no post-mechanical treatment is needed. The highly efficient defibrillation of pulp fiber to CNFs is thought to be due to two factors: 1) swelling in TBAA/DMSO effectively loosens the structure of cellulose supermolecules by breaking the intra- and intermolecular hydrogen bonds between cellulose chains; and 2) the carboxyl groups grafted onto the cellulose molecules by esterification prohibit the reformulation of hydrogen bonds between cellulose chains and therefore stabilize the disperse CNFs with uniform diameter in solution. Other than acid anhydride, no catalyst is added for the esterification, which facilitates the recycling and reuse of the binary solvent. This energy-efficient one-pot method could facilitate the large-scale manufacture of bio-based nanomaterials.