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| Study on the Ameliorative Effect of a Ternary Deep Eutectic Solvent System on Waste Paper Fibers |
| Received:May 08, 2025 Revised:June 29, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.10.010 |
| Key Words:ternary deep eutectic solvent system waste paper fibers paper strength |
| Fund Project:山东省自然科学基金项目（ZR2024MC054）。 |
| Author Name | Affiliation | Postcode | | LI Fengfeng* | Shanying International Holdings Co., Ltd., Ma’anshan, Anhui Province, 243000
State Key Lab of Green Papermaking and Resource Recycling, Qilu University of Technology （Shandong Academy of Sciences）, Ji’nan, Shandong Province, 250353
Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 | | CHEN Xueping | Shanying International Holdings Co., Ltd., Ma’anshan, Anhui Province, 243000 | 243000 | | ZHAN Zhengfeng | Shanying International Holdings Co., Ltd., Ma’anshan, Anhui Province, 243000 | 243000 | | ZHANG Zhili* | State Key Lab of Green Papermaking and Resource Recycling, Qilu University of Technology （Shandong Academy of Sciences）, Ji’nan, Shandong Province, 250353 | 250353 | | WANG Yuanyuan | State Key Lab of Green Papermaking and Resource Recycling, Qilu University of Technology （Shandong Academy of Sciences）, Ji’nan, Shandong Province, 250353 | 250353 | | TONG Guolin* | Nanjing Forestry University, Nanjing, Jiangsu Province, 210037 | 210037 |
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| Abstract:To address the deterioration of fiber quality and mechanical strength degradation during waste paper recycling， this study developed a choline chloride/glycerol/oxalic acid ternary green solvent system for fiber regeneration. Through single-factor experiments， it was found that the optimal processing conditions were as follows： moisture content of wast paper pulp of 10%， pretreatment， temperature of 80 ℃， pretreatment time of 60 min， and solid-liquid ratio of 1∶10. Under these conditions， the tensile index， tear index， and folding endurance of the paper was 15.8 N·m/g， 4.27 mN·m2/g and 22 times， respectively. Comprehensive structural characterization analysis showed that the cellulose crystallinity index decreased from 48.5% to 40.8%， accompanied by substantial increases in surface porosity. The above research results indicated that the ternary deep eutectic solvent system exerted an improving effect on waste paper fibers. |
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