文献类型：期刊文献

英文题名：Acidic deep eutectic solvent assisted isolation of lignin containing nanocellulose from thermomechanical pulp

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

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

年份：2020

卷号：247

外文期刊名：CARBOHYDRATE POLYMERS

收录：;EI(收录号：20202808928382);WOS:【SCI-EXPANDED(收录号:WOS:000565142600006)】；

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], and Canada Foundation for Innovation - John R. Evans Leaders Fund (CFI-JELF #37517). Jungang Jiang would like to thank the China Scholarship Council (CSC) for its financial support (CSC No. 201806510007). Nancy C. Carrillo-Enriquez acknowledges support from Mitacs Globalink Research Internship program.

语种：英文

外文关键词：Thermomechanical pulp (TMP); Lignin containing nanocellulose (LNC); Deep eutectic solvent (DES); Lignin nanoparticles; Self-assembly; Thermally stable

摘要：Nanocellulose is a promising material but its isolation generally requires unrecyclable hazardous chemicals and high energy consumption and its overall yield is low due to the use of high purity cellulose as precursor. In order to overcome these shortcomings, in this study, thermomechanical pulp (TMP) was investigated as a precursor for isolating lignin containing nanocellulose (LNC) using an environmentally friendly acidic deep eutectic solvent (DES) pre-treatment. Flat "ribbon" like LNCs (around 7.1 nm wide, 3.7 nm thick) with uniformly distributed lignin nanoparticles of 20-50 nm in diameter were successfully obtained at 57 % yield under optimum pre-treatment conditions (90 degrees C, 6 h, 1:1 oxalic acid dihydrate to choline chloride ratio). The LNCs exhibit cellulose I beta structure, high lignin content (32.6 %), and high thermal stability (T-max of 358 degrees C). In general, green acidic DES pre-treatment has shown high efficiency in converting high lignin content biomass into value-added LNC, which benefits both lignocellulose utilization and environmental protection.