文献类型：期刊文献

英文题名：High Production Yield and More Thermally Stable Lignin-Containing Cellulose Nanocrystals Isolated Using a Ternary Acidic Deep Eutectic Solvent

作者：Jiang, Jungang[1,2];Carrillo-Enriquez, Nancy C.[1];Oguzlu, Hale[1];Han, Xushen[3,4];Bi, Ran[3];Song, Mingyao[1];Saddler, Jack N.[3];Sun, Run-Cang[5];Jiang, Feng[1]

机构：[1]Univ British Columbia, Dept Wood Sci, Sustainable Funct Biomat Lab, Vancouver, BC V6T 1Z4, Canada;[2]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China;[3]Univ British Columbia, Dept Wood Sci, Forest Prod Biotechnol Bioenergy Grp, Vancouver, BC V6T 1Z4, Canada;[4]East China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China;[5]Dalian Polytech Univ, Ctr Lignocellulos Chem & Biomat, Dalian 116034, Peoples R China

年份：2020

卷号：8

期号：18

起止页码：7182

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20202308782216);WOS:【SCI-EXPANDED(收录号:WOS:000535188400029)】；

基金：This research was undertaken, in part, thanks to funding from the Canada Research Chairs program (231928). We acknowledge the support of the Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2018-06818]. J.J. thanks the China Scholarship Council (CSC) for its financial support (CSC No. 201806510007).

语种：英文

外文关键词：Thermomechanical pulp (TMP); Deep eutectic solvent (DES); Lignin-containing cellulose nanocrystals (LCNCs); Self-assembly; Thermal stability

摘要：From the aspects of green chemistry and sustainability, the use of green and sustainable materials and reagents for nanocellulose production is highly desirable. In this study, an acidic deep eutectic solvent (DES) pretreatment process was developed to fabricate lignin-containing cellulose nanocrystals (LCNCs) from undervalued thermo-mechanical pulp (TMP). LCNCs were successfully obtained using both binary DES (choline chloride:oxalic acid, 1:1 molar ratio) and ternary DES (choline chloride:oxalic acid:p-toluenesulfonic acid, 2:1:1 molar ratio) followed by a mild mechanical disintegration process. The LCNCs with a width of around 6 nm, thickness of 3.3 nm, retained cellulose I crystallinity of 57.4%, high lignin content of 47.8%, and high yield of 66% were obtained under the optimum conditions using ternary DES at 80 degrees C for 3 h pretreatment. Meanwhile, the LCNCs obtained from this process showed a high thermal stability (T-max of 358 degrees C), which exhibited promising potential for further applications. The results demonstrate that the environmentally friendly DES is a promising solvent, which can provide a prospective future for both lignocellulosic material utilization and LCNCs isolation.