用油热处理的木材中改进纤维素聚合物的结构完整性和动力学
Luxi He1, Tianfang Zhang1, Wenrui Xie2
1State Key Laboratory of Efficient Production of Forest Resources, Beijing Key Laboratory of Wood Science and Engineering, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, PR China; Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium.
International journal of biological macromolecules
|February 15, 2025
概括
天然油增强了经过热处理的木材的耐用性. 这种可持续处理提高了热稳定性和机械性能,使改性木材适用于结构应用.
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
- 聚合物科学 聚合物科学
背景情况:
- 木材是一种可持续的,可再生的资源,具有固有的耐用性限制.
- 热处理增强了木材的性能,但可能会对机械性能产生负面影响.
- 木材中的红纤维素巨分子需要保护免受环境退化.
研究的目的:
- 研究油作为热处理木材的天然修饰剂.
- 评估油对木材热稳定性和机械性能的影响.
- 为了探索油在加强木材生物聚合物的作用.
主要方法:
- 用 tung 油或不使用 tung 油对木材进行热处理 (HTO木材与HTA木材).
- 分析热稳定性,粘弹性行为和机械性能.
- 细胞壁结构和组件保护的显微镜检查.
主要成果:
- 油处理显著提高了热稳定性,控制了外热反应.
- 与HTO木材相比,HTA木材在210°C时Young的模量增加了40.4%.
- 油降低了粘弹性放松,抑制了爬行,增加了细胞壁厚度,并保护了木材组件.
结论:
- 油作为一种可持续的修饰剂,增强热处理木材的性能.
- 经过改造的木材在结构应用中表现出优越的热和机械性能.
- 油通过加强木材的晶体纤维素和素结构来减轻降解.
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