文献类型：期刊文献

英文题名：Preparation and Characterization of Lignin-Containing Cellulose Nanofibril from Poplar High-Yield Pulp via TEMPO-Mediated Oxidation and Homogenization

作者：Wen, Yangbing[1,2] Yuan, Zhaoyang[3] Liu, Xiongli[1] Qu, Jialei[1] Yang, Shuo[1] Wang, An[1] Wang, Chunping[1] Wei, Bing[4] Xu, Jianfeng[5] Ni, Yonghao[1,6,7]

第一作者：Wen, Yangbing

通信作者：Wen, YB[1];Wen, YB[2];Yuan, ZY[3]

机构：[1]Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin Econ & Technol Dev Area, 29th Ave 13th, Tianjin 300457, Peoples R China;[2]Tianjin Woodelf Biotechnol Co Ltd, Tianjin Econ & Technol Dev Area, 29th Ave 13th, Tianjin 300457, Peoples R China;[3]Michigan State Univ, Dept Biochem & Mol Biol, 603 Wilson Rd, E Lansing, MI 48824 USA;[4]Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China;[5]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[6]Univ New Brunswick, Dept Chem Engn, Fredericton, NB E3B 5A3, Canada;[7]Univ New Brunswick, Limerick Pulp & Paper Ctr, Fredericton, NB E3B 5A3, Canada

年份：2019

卷号：7

期号：6

起止页码：6131-6139

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20191006603162);Scopus(收录号：2-s2.0-85062449556);WOS:【SCI-EXPANDED(收录号:WOS:000461978200058)】；

基金：The authors wish to thank the financial support from the National Science Foundation for Young Scientists of China (Grant No. 31700514) and the National Key Research and Development Plan (Grant No. 2017YFB0307902). The valuable comments made by the anonymous reviewers are also sincerely appreciated.

语种：英文

外文关键词：High yield pulp; Cellulose nanofibril; Rheology; Nanocellulosic fibril morphology; Thermal stability; Hydrophobicity

摘要：In this study, a poplar high-yield pulp [preconditioning refiner alkaline peroxide mechanical pulp (P-RC APMP)] was used to produce lignin-containing cellulose nanofibril (LCCNF) dispersions through a sequential process of 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation followed by high pressure homogenization. To produce LCCNF with different lignin contents, sodium hypochlorite loadings of 4-12 mmol/g fiber during TEMPO-mediated oxidation step were explored. The effect of lignin content on morphology, thermal stability, crystallinity, and rheological properties of the produced LCCNFs was investigated. The results showed that the TEMPO-mediated oxidation of cellulose was largely limited to the fiber surface. The residual lignin on the surface of LCCNF was presented as small particles. The increase of lignin content increased the thermal stability and decreased the viscosity of the LCCNF. Moreover, at higher lignin content, greater flocculation and aggregation of fibrils took place, which resulted in lower gel-like characteristics of the resultant LCCNF. The results of water contact angle determination also demonstrated that the increase of lignin content significantly increased the hydrophobicity of the LCCNF.