李凤凤,陈学萍,占正奉,张志礼,王圆圆,童国林.三元低共熔溶剂体系对废纸纤维的改善作用研究[J].中国造纸,2025,44(10):86-94 本文二维码信息
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三元低共熔溶剂体系对废纸纤维的改善作用研究
Study on the Ameliorative Effect of a Ternary Deep Eutectic Solvent System on Waste Paper Fibers
收稿日期:2025-05-08  修订日期:2025-06-29
DOI:10.11980/j.issn.0254-508X.2025.10.010
关键词:  三元低共熔溶剂  废纸纤维  纸张强度
Key Words:ternary deep eutectic solvent system  waste paper fibers  paper strength
基金项目:山东省自然科学基金项目(ZR2024MC054)。
作者单位邮编
李凤凤* 山鹰国际控股股份公司,安徽马鞍山,243000
齐鲁工业大学(山东省科学院) 绿色造纸与资源循环全国重点实验室,山东济南,250353
南京林业大学, 江苏南京,210037 
210037
陈学萍 山鹰国际控股股份公司,安徽马鞍山,243000 243000
占正奉 山鹰国际控股股份公司,安徽马鞍山,243000 243000
张志礼* 齐鲁工业大学(山东省科学院) 绿色造纸与资源循环全国重点实验室,山东济南,250353 250353
王圆圆 齐鲁工业大学(山东省科学院) 绿色造纸与资源循环全国重点实验室,山东济南,250353 250353
童国林* 南京林业大学, 江苏南京,210037 210037
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摘要:针对废纸纤维回收利用后纤维质量及纸张物理强度下降等问题,本研究探究了氯化胆碱/丙三醇/草酸三元低共熔溶剂体系对废纸纤维性能恢复的影响,通过单因素实验探究发现较佳的处理条件为:废纸浆含水量10%,预处理温度80 ℃,预处理时间60 min,固液比1∶10,在此条件下纸张的抗张指数、撕裂指数、耐折度分别为15.8 N·m/g、4.27 mN·m2/g和22次。随后,对预处理后废纸纤维的结构进行表征,结果表明,预处理后纤维的结晶度指数由原来的48.5%降低至40.8%,纤维表面出现更多的孔隙结构。
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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