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| Study on the Preparation of Cellulose Nanofibers via Acidic Eutectic Solvent Pretreatment |
| Received:July 03, 2025 Revised:September 02, 2025 |
| DOI：10.11981/j.issn.1000-6842.2026.02.24 |
| Key Words:cellulose;cellulose nanofibers;deep eutectic solvents;pretreatment;high-pressure homogenization |
| Fund Project:国家自然科学基金项目（22278035）。 |
| Author Name | Affiliation | Postcode | | WAN Xiaoxuan* | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | LIU Xinyue | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | JIA Ruiping | 2Linyi Pingyi Forestry Development Center， Linyi， Shandong Province， 273300 | 273300 | | WANG Ziquan | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | LI Ke | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | PANG Yanjun | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | XU Feng | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 | | ZHANG Xueming* | 1College of Material Science and Technology， Beijing Key Lab of Lignocellulosic Chemistry， Beijing Forestry University， Beijing， 100083 | 100083 |
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| Abstract: |
| Deep eutectic solvents （DES） were prepared by combining various organic acids （citric acid， malic acid， and lactic acid） with 2，3-epoxypropyl trimethyl ammonium chloride （molar ratio of 1∶2）. These DES were used to pretreat hardwood chemical pulp to prepare cellulose nanofibers （CNF） with a high-pressure homogenization process. The effects of pretreatment by different DES on the properties of CNF were investigated. The results indicated that the CNF produced using the DES of lactic acid/2，3-epoxypropyl trimethylammonium chloride with homogenizing for 15 times under a pressure of 100 MPa exhibited the best performance， with an average diameter reduced to 12.95 nm， a Zeta potential of -26.21 mV， and no phase separation after 9 months of storage. The analysis of the mechanism revealed that DES selectively broke down the amorphous regions of cellulose fibers after swelling， was conductive to subsequent high-pressure homogenization treatment to produce CNF with a high specific surface area and excellent properties. |
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