功能化的纤维素基粘合剂,具有具有高湿度抗性性能的环氧基团.
Fengying Dai1, Haochen Liu2, Jing Wang3
1State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China; Cangzhou Institute of Tiangong University, Cangzhou 061000, China.
International journal of biological macromolecules
|August 30, 2024
概括
这项研究开发了一种由微晶纤维素 (MCC) 制成的疏水性纤维素基粘合剂,用于可持续的应用. 修改后的粘合剂表现出优异的粘合强度和耐水性,即使在潮湿的条件下.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续化学 可持续化学
背景情况:
- 工业粘合剂通常依赖于不可再生资源,并对健康构成风险.
- 纤维素是一种丰富的天然聚合物,显示出粘合剂应用的前景,但患有水友性.
- 高湿度环境对传统的纤维素基粘合剂构成重大挑战.
研究的目的:
- 开发一种基于纤维素的疏水和抗胀粘合剂.
- 为了增强纤维素基材料的粘合性和凝聚性.
- 创造一种可持续的粘合剂替代品,在潮湿条件下具有优越的性能.
主要方法:
- 使用环氧化合物对微晶纤维素 (MCC) 的修改.
- 在热压过程中利用环氧基和基之间的反应.
- 在干燥,潮湿 (浸水) 和高湿度 (90%) 条件下测试粘合强度.
主要成果:
- 经过修改的MCC粘合剂表现出优异的疏水和抗胀特性.
- 在63°C的水中3小时后,干粘强度达到了6.02 ± 0.26 MPa,湿粘强度达到了4.78 ± 0.21 MPa.
- 在90%的相对湿度下保持稳定的粘合强度,并在,铁和玻璃等基板上表现出多功能性.
结论:
- 环氧修饰有效地提高了基于纤维素的粘合剂的耐水性和粘合性能.
- 开发的粘合剂为传统工业粘合剂提供了可持续和高性能的替代品.
- 这种方法为制造用于苛刻环境的先进纤维素基粘合剂提供了一种可行的方法.
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