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Preparation and Performance of Cationic Modified Cellulose Nanofibril Based on Ternary Deep Eutectic Solvent System
Received:December 17, 2022  
DOI：10.11980/j.issn.0254-508X.2023.10.002
Key Words:ternary deep eutectic solvent  dialdehyde cellulose  cationic modification  cellulose nanofibril
Fund Project:国家自然科学基金（31901267）；山东省自然科学基金（ZR2022QE109）；山东省科技型中小企业创新能力提升工程项目（2022TSGC2202）；齐鲁工业大学（山东省科学院）科教产融合创新试点工程（2022PY042）。
Author NameAffiliationPostcode
HU Yaru State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
YANG Zhengbang State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
WANG Ying* State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
YANG Guihua State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
CHEN Jiachuan State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
JI Xingxiang State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353 250353
SUN Yueping Rizhao Huatai Paper Co.， Ltd.， Rizhao， Shandong Province， 276500 276500
HE Ming State Key Lab of Biobased Material and Green Papermaking/Key Lab of Pulp & Paper of Science and Technology of Education Ministry， Qilu University of Technology （Shandong Academy of Sciences）， Ji’nan， Shandong Province， 250353
Rizhao Huatai Paper Co.， Ltd.， Rizhao， Shandong Province， 276500 		276500
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Abstract:In this study， acacia broadleaf wood pulp was used as the raw material. The cationic modified cellulose nanofibril （CCNF） was prepared by cationic modified pretreatment of sodium periodate oxidized dialdehyde cellulose （DAC） with choline chloride-glycerol-aminoguanidine hydrochloride ternary deep eutectic solvent （DES） system， combined with ultra-micro-comminution and high-pressure homogenization. The results showed that the crystallinity of CCNF prepared after DES cationization modification pretreatment was increased with the maximum crystallinity of 63.36% when pretreated for 60 min compared with that of CNF prepared without any modification treatment. The introduction of cationic groups significantly increased the Zeta potential from -18.0 mV to 53.4 mV， but DES pretreatment would destroy the internal structure of the fiber， thus reducing the stability of the suspension.
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