木材的尺寸稳定性通过多价值金属引发的纤维纤维纤维菌微纤维交叉连接来增强
R M Oshani Nayanathara1, Weiqi Leng2, Jason Street1
1Department of Sustainable Bioproducts, Mississippi State University, MS 39762, United States.
International journal of biological macromolecules
|April 28, 2024
概括
本研究介绍了一种金属离子改造 (MIM) 方法,以提高木材的尺寸稳定性. 通过限制水分相互作用,MIM增强了木材的疏水性,减少了胀,为木材材料提供了持久的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 木材科学 木材科学 木材科学
- 表面化学 表面化学
背景情况:
- 由于吸收水分,木材在尺寸上不稳定,导致胀和收缩.
- 现有的木材稳定方法存在局限性.
研究的目的:
- 开发一种简单的金属离子改造 (MIM) 方法,以提高木材的尺寸稳定性.
- 通过金属阴离子与木纤维的相互作用来研究提高稳定性的机制.
主要方法:
- 木材样本用高价值金属酸 (Fe3+,Al3+,Zr4+) 的水溶液进行处理.
- 金属离子改性 (MIM) 木材的特点是表面的疏水性和尺寸稳定性.
- 在不同的木材种类中评估了胀率和抗胀效率.
主要成果:
- MIM处理显著增加了木材表面的疏水性,水接触角度在120-130°之间.
- Fe3+治疗使南方黄松的胀率从6%降低到4%.
- 在不同物种中,接触式和辐射式抗胀效率从34.74%到57.14%不等.
结论:
- 金属离子改造 (MIM) 有效地提高了木材的尺寸稳定性和疏水性.
- 金属离子体和基纤维素微纤维素之间的不可逆转的协调键负责提高稳定性.
- 这种方法为创造尺寸稳定的木制品提供了一个有希望的方法.
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