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Study on Micronanocellulose Produced by Deep Eutectic Solvent Coupled with Mechanical Beating
Received:January 16, 2023  
DOI：10.11980/j.issn.0254-508X.2023.10.003
Key Words:deep eutectic solvent  pretreatment  beating  micronanocellulose  structural change
Fund Project:国家自然科学基金（21908167）； 广西清洁化制浆造纸与污染控制重点实验室开放基金资助项目（2021KF31）；中国博士后面上基金（2023M731166）；山东省博士后创新项目（SDCX—ZG-202303084）。
Author NameAffiliationPostcode
XUE Pengcheng Tianjin Key Lab of Pulp & Paper， School of Light Industry Science and Engineering， Tianjin University of Science & Technology， Tianjin，300457 300457
SUN Yuekai* Tianjin Key Lab of Pulp & Paper， School of Light Industry Science and Engineering， Tianjin University of Science & Technology， Tianjin，300457
Asia Spymbol （Shandong） Puly and Poper Co.， Ltd.， Rizhao， Shandong Province， 276826 		276826
HUO Dan Tianjin Key Lab of Pulp & Paper， School of Light Industry Science and Engineering， Tianjin University of Science & Technology， Tianjin，300457
Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 275335
Institute of Chemical Industry of Forest Products， CAF， Nanjing， Jiangsu Province， 210042
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University，Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
ZHANG Fengshan Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 275335 275335
FANG Guigan Institute of Chemical Industry of Forest Products， CAF， Nanjing， Jiangsu Province， 210042 210042
ZHU Hongxiang Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， College of Light Industry and Food Engineering， Guangxi University，Nanning， Guangxi Zhuang Autonomous Region， 530004 530004
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Abstract:The “green” deep eutectic solvent （lactic acid/betaine hydrochloride） with different volume fraction of deionized water was used to pretreat eucalyptus and to study the micro and nanofibrillation of lignocellulose in combination with beating and oxidation treatment. The results showed that the DES had the best pretreatment effect when volume fraction of 5% deionized water was added. At this time， the retention rate of cellulose was 62.9%， the removal rates of hemicellulose and lignin were 91.8% and 82.9%， respectively， and the cellulose maintained the type I crystalline structure. After the beating and oxidation treatment， the micro fibrillation of lignocellulose was obvious， and the average length and average width of fiber were shortened by 47.7% and 49.9%， respectively， and the surface charge of fiber was also significantly enhanced， and the maximum absolute value of Zeta potential reached 51.65 mV.
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