文献类型：期刊文献

英文题名：Recyclable and Reusable Maleic Acid for Efficient Production of Cellulose Nanofibrils with Stable Performance

作者：Bian, Huiyang[1] Luo, Jing[1] Wang, Ruibin[1,2] Zhou, Xuelian[1] Ni, Shuzhen[1,3] Shi, Rui[1] Fang, Guigan[4] Dai, Hongqi[1]

第一作者：Bian, Huiyang

通信作者：Dai, HQ[1]

机构：[1]Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Jiangsu, Peoples R China;[2]Guangdong Univ Technol, Sch Mat & Energy, Ctr Emerging Mat & Technol, Guangzhou 510006, Guangdong, Peoples R China;[3]Qilu Univ Technol, Shandong Acad Sci, State Key Lab Biobased Mat & Green Papermaking, Jinan 250353, Shandong, Peoples R China;[4]Chinese Acad Forestry, China Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2019

卷号：7

期号：24

起止页码：20022-20031

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20195007804092);Scopus(收录号：2-s2.0-85075914062);WOS:【SCI-EXPANDED(收录号:WOS:000503330400074)】；

基金：This work was supported by the National Key Research and Development Project of the 13th Five-Year Plan (2017YFD0601005). We would like to acknowledge Dr. Liqing Wei of Forest Products Laboratory, U.S. Forest Service for revising the manuscript. We also would like to acknowledge Buhong Gao, Shilong Yang, and Fan Su of Advanced Analysis & Testing Center, Nanjing Forestry University for providing valuable guidance on the use of AFM, NMR, and XRD, respectively, and Jiahui Xu of Nanjing Forestry University for schematic illustration design.

语种：英文

外文关键词：cellulose nanofibrils (CNFs); solid organic acid hydrolysis; maleic acid; acid recovery and reuse; stable performance

摘要：Cellulose nanofibrils (CNFs) have attracted great attention because of their unique mechanical and optical properties for a variety of applications in composites, packaging materials, and electronics. Green, low-cost, and sustainable production of CNFs, however, is still challenging. Herein, an economic system using a type of a recyclable solid organic acid, maleic acid (MA), was developed to prepare carboxylated CNFs from bleached pulp fibers. The physical and chemical properties of the CNF can be tailored by adjusting the acid hydrolysis intensity or combined hydrolysis factor. Because of its low water solubility, MA can be easily recovered with a yield of approximately 90% after hydrolysis reactions through simple crystallization technology. The recyclability experiment of MA showed that the recovery yield of the acid was still 84% in the fourth cycle and the chemical structure of the recycled MA was almost unchanged throughout the recycling cycles. More importantly, the hydrolysis efficiency was not decreased after the recycling process, thereby endowing the resulting CNF with stable performance. Overall, this work provides a green and economically feasible method to recover and reuse MA for sustainable and large-scale production of CNFs.