开发一种环保的lignosulfonate-chitosan粘合剂,通过环氧化修饰,具有出色的耐水性
Xianghong Zhang1, Zhi Li1, Antonio Pizzi2
1Yunnan Key Laboratory of Wood Adhesives and Glue Products, Southwest Forestry University, Kunming 650224, PR China; College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China.
International journal of biological macromolecules
|July 9, 2025
概括
一种基于生物质的新型粘合剂是使用环氧化硫酸盐和酸盐开发出来的. 这种环保树脂表现出优越的粘合强度和更密集的结构,为木材应用提供了可持续的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 聚合物化学 聚合物化学
背景情况:
- 生物质基粘合剂因环境和健康问题而受到越来越多的关注.
- 二硫酸为粘合剂开发提供了可持续的原材料.
- 开发高性能,环保的粘合剂对于木材行业至关重要.
研究的目的:
- 为了合成和表征一种新型的环氧化硫酸基托 (GL-C) 树脂.
- 为了评估GL-C树脂作为木材粘合剂的性能.
- 研究生物质衍生粘合剂的潜力,以提高可持续性.
主要方法:
- 环氧化硫酸盐 (GL) 是从硫酸盐 (L) 和甘三甘乙烯合成的.
- GL与酸盐 (C) 交叉连接,形成GL-C树脂.
- 用GL-C和对照L-C树脂制备了合板样本,随后进行了机械性质评估.
主要成果:
- 一个密集的三维网络结构是通过环氧,氨基,基,碳基和硫基组之间的反应而形成的.
- 用GL-C树脂粘合的合板 (GL/C质量比为1:1) 显示出出色的剪切强度.
- 与L-C对照相比,在63°C的湿粘强度提高了0.66 MPa,这表明粘合力增强.
结论:
- 开发的环氧化lignosulfonate-chitosan树脂提供了一个有前途的可持续粘合剂,增强了粘合性能.
- 交叉连接机制导致更密集的粘合结构和优越的机械性能.
- 这种基于生物质的粘合剂为合板和其他木材制品提供了一个可行的环保替代品.
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