| 吕焱,韩善明,李炯炯,梁芳敏,房桂干.改性木质素用于纸张增强的研究[J].中国造纸学报,2025,(2):10-16 |
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| 改性木质素用于纸张增强的研究 |
| Study on Modified Lignin Used for Paper Strengthening |
| 投稿时间：2025-04-18 修订日期：2025-05-06 |
| DOI：10.11981/j.issn.1000-6842.2025.02.10 |
| 中文关键词: 木质素/铜离子纳米颗粒 改性木质素 纸张强度 |
| Key Words:lignin/Cu ion nanoparticles modified lignin paper strength |
| 基金项目:国家自然科学基金青年项目（22408392）；江苏省自然科学基金青年项目（BK20240293，BK20230127）；中国博士后科学基金面上项目（2024M753540）；中国博士后科学基金特别资助项目（2023TQ0374）。 |
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| 中文摘要: |
| 以碱木质素为原料，采用自组装催化氧化还原方法，制备了富含邻醌和邻酚的木质素/铜离子纳米颗粒（LNP/Cu）。将碱木质素和LNP/Cu用于纸张增强改性，以热压替代室温干燥制得增强纸，考察了添加剂和干燥方法对纸张强度性能的影响。结果表明，本研究所制的LNP/Cu呈球形，直径约300 nm，可在纸张中均匀分布，且对纸张的增强效果优于碱木质素。热压干燥可以增强木质素和纤维间的相互作用，相比于无添加剂、室温干燥制得纸张，LNP/Cu作添加剂并结合热压干燥（120 ℃、0.14 MPa、10 min）制得增强纸的抗张指数、耐破指数和撕裂指数分别增加27.5%、51.0%和9.6%，透气度降低38.8%。 |
| Abstract: |
| Using alkali lignin as raw material， lignin/copper ion nanoparticles （LNP/Cu） containing rich amounts of ortho-quinone and ortho-phenol were prepared using a self-assembly catalytic oxidation-reduction method. The alkali lignin and LNP/Cu were taken as paper reinforcement， via hot-press drying methods instead of room-temperature drying method to prepare reinforced paper. The effects of the additive and drying methods on paper strength properties were investigated. The results showed that the LNP/Cu prepared in this study exhibited a spherical shape with a diameter of approximately 300 nm and could be uniformly distributed in the paper， demonstrating superior reinforcement effects compared to alkali lignin. The hot-press drying method enhanced the interaction between lignin and fibers. Compared to paper produced without additives and using room-temperature drying， the tensile index， bursting index， and tearing index of the reinforced paper produced with LNP/Cu as an additive combined with the hot-press drying method （120 ℃， 0.14 MPa， 10 min） increased by 27.5%， 51.0%， and 9.6%， respectively， while the air permeability decreased by 38.8%. |
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