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以贝为灵感的酸/纤维素为基础的粘合剂,具有抗沸水的性能,用于粘合木材
Yue Zhang1, Xin Zhao1, Yuyan Jiang1
1Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin, 150040, PR China.
International journal of biological macromolecules
|December 28, 2025
概括
由纤维素和酸 (GA) 制成的新型环保木材粘合剂提供了卓越的强度和耐水性. 这种可持续的替代化石粘合剂符合木材粘合应用的高性能标准.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 生物材料是一种生物材料.
背景情况:
- 越来越多的人对可持续的,环保的替代品的需求,以化石材料为基础的粘合剂.
- 传统的纤维素基粘合剂的局限性,特别是耐水性较差.
- 需要在木材应用中使用高性能生物基粘合剂,如合板.
研究的目的:
- 开发一种高性能,可再生和环保的木材粘合剂.
- 为了提高纤维素基粘合剂的抗水性和粘合强度.
- 利用仿生原理模仿海洋的粘合机制.
主要方法:
- 将天然多的酸 (GA) 纳入二甲纤维素 (DAC).
- 使用仿生原理来模拟贝的湿粘合.
- 优化脱离离子水,DAC和GA的质量比.
主要成果:
- 与单独使用DAC相比,复合粘合剂 (DAC-GA) 的干切强度增加了39%.
- DAC-GA粘合剂在沸水中达到0.96 ± 0.04 MPa的剪切强度,符合I类面板的要求.
- 键,共价键和机械互锁结构的协同效应有助于提高性能.
结论:
- 将酸生物模拟纳入二甲基纤维素显著提高了粘合剂的抗水性和粘合强度.
- 开发的DAC-GA粘合剂是一种高性能,环保的替代石化基粘合剂.
- 这种生物基粘合剂在合板和其他木材粘合工业中具有很强的应用潜力.
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