| 吴彬,李彬,梁婷婷,李赟,张莉莉,王志国.木质纤维素基复合膜的制备及其性能研究[J].中国造纸学报,2026,41(2):42-52 |
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| 木质纤维素基复合膜的制备及其性能研究 |
| Study on the Preparation and Properties of Lignocellulose-based Composite Films |
| 投稿时间：2025-09-18 修订日期：2025-10-14 |
| DOI：10.11981/j.issn.1000-6842.2026.02.42 |
| 中文关键词: 木质纤维素基复合膜 物理交联 化学交联 力学性能 耐水性 紫外屏蔽性能 |
| Key Words:lignocellulose-based composite films physically cross-linked chemically cross-linked mechanical properties water resistance UV shielding performance |
| 基金项目:江苏省市场监管局科技计划项目（KJ2026097）。 |
| 作者 | 单位 | 邮编 | | 吴彬* | 1淮安市产品质量监督综合检验中心,江苏淮安,223001
2南京林业大学轻工与食品学院,江苏南京,210037 | 210037 | | 李彬 | 1淮安市产品质量监督综合检验中心,江苏淮安,223001 | 223001 | | 梁婷婷 | 1淮安市产品质量监督综合检验中心,江苏淮安,223001 | 223001 | | 李赟 | 2南京林业大学轻工与食品学院,江苏南京,210037 | 210037 | | 张莉莉 | 2南京林业大学轻工与食品学院,江苏南京,210037 | 210037 | | 王志国* | 2南京林业大学轻工与食品学院,江苏南京,210037 | 210037 |
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| 中文摘要: |
| 本研究仿生天然植物细胞壁结构，以纤维素纳米纤维（CNF）、魔芋葡甘露聚糖（KGM）、磺化木质素（LA）为原料，通过乙酸蒸气质子化构建物理交联网络，以及通过环氧氯丙烷与氨蒸气构建化学交联网络，制备两类交联木质纤维素基复合膜。系统探究交联方式与组分配比对复合膜理化性能的影响，揭示3种组分在复合膜中的协同作用机制。结果表明，与天然植物细胞壁相似，复合膜内的CNF通过分子间氢键形成刚性三维骨架，KGM强化氢键协同作用提升膜韧性，LA可增韧膜并优化孔隙结构；与未添加LA相比，LA质量分数1%时，化学交联复合膜的断裂应变由5.01%提升至10.65%，1天润胀率低至(175.78±11.06)%且仅为物理交联复合膜的4.12%。此外，LA质量分数15%时，化学交联复合膜的中波紫外线（UVB）和长波紫外线（UVA）阻隔率达到峰值，分别为98.5%和87.8%。上述结果说明，LA不仅能够优化复合膜孔隙结构，显著增强其力学性能，还可赋予复合膜卓越的耐水性和紫外屏蔽性能。 |
| Abstract: |
| This study mimicked the structure of natural plant cell walls， using cellulose nanofibers （CNF）， konjac glucomannan （KGM）， and sulfonated lignin （LA） as raw materials， a physically cross-linked network was constructed via acetic acid vapor protonation， and by the formation of a chemically cross-linked network using epichlorohydrin and ammonia vapor， resulting in the preparation of two types of cross-linked lignocellulose-based composite films. The study systematically investigated the effects of cross-linking methods and component ratios on the physicochemical properties of the composite films， revealing the synergistic mechanisms of the three components within the composite films. The results indicated that， similar to natural plant cell walls， CNF within the composite film formed a rigid three-dimensional framework through intermolecular hydrogen bonding， KGM enhanced the synergistic effect of hydrogen bonding to improve film toughness， and LA could toughen the film and optimize its pore structure. Compared to the control without LA， when the LA mass fraction was 1%， the fracture strain of the chemically cross-linked composite film increased from 5.01% to 10.65%， and the 1 day water swelling rate was as low as (175.78±11.06)%， which was only 4.12% of that of the physically cross-linked composite film. At a LA mass fraction of 15%， the chemical cross-linked composite film achieved peak blocking rates for medium-wave ultraviolet （UVB） and long-wave ultraviolet （UVA） radiation， at 98.5% and 87.8%， respectively. These results demonstrated that LA not only optimized the pore structure of the composite film and significantly enhanced its mechanical properties but also conferred excellent water resistance and UV shielding performance. |
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