定制设计的聚烯木质素用于增强基于聚乙烯醇的木材粘合剂
Tingting Liu1, Yanfan Yang1, Li Yan1
1State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China.
International journal of biological macromolecules
|January 3, 2024
概括
研究人员开发了一种可持续的木材粘合剂,该粘合剂由改性木质素和聚乙烯醇 (PVA) 制成. 这种绿色粘合剂显著提高了木材的粘合强度和耐水性,为木材行业提供了一个有前途的环保替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 生物质利用生物质的利用
背景情况:
- 越来越多的环境问题需要可持续的替代传统木材粘合剂.
- 作为生物质副产品的红具有开发环保粘合剂的潜力.
- 聚乙醇 (PVA) 是一种常见的粘合成分,需要提高性能.
研究的目的:
- 开发一种高性能,可持续的木材粘合剂,使用改性木质素和PVA.
- 通过素功能化,增强PVA的粘合性.
- 探索生物质衍生材料在木材粘合剂行业的潜力.
主要方法:
- 从玉米残留物中提取的红素通过化和化进行化学修饰.
- 修改后的红素被纳入一个聚乙烯醇矩阵中.
- 由此产生的生物质基粘合剂进行了粘合强度和疏水性测试.
主要成果:
- 修改后的红素显示出基基组 (>7.92 mmol/g) 的显著增加.
- 与纯PVA相比,聚乙醇/聚烯宁复合材料的粘合强度和疏水性得到改善.
- 聚乙烯/醇-氨酸显示,木材围切强度 (6.27MPa) 提高了77.6%,湿切强度增加了近100%.
结论:
- 一种新的,高性能的绿色木材粘合剂成功地从改性生物质中开发出来.
- 素的功能化增强了它与PVA和木质基板的相互作用.
- 这项研究提供了一种可持续和有效的替代原材料用于木材粘合剂,促进生物质的价值化.
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