通过光催化木质素氧化,将天然竹子加工成白竹子
Youyong Wang1, Jing Tang2, Qianhui Peng3
1School of Materials Science and Engineering, Hubei University of Automotive Technology, Shiyan 442002, China; Hubei Key Laboratory of Energy Storage and Power Battery, Hubei University of Automotive Technology, Shiyan 442002, China.
International journal of biological macromolecules
|June 10, 2024
概括
一种新的光催化氧化方法有效地使用过氧化和紫外线使竹子变白. 这种环保的工艺可以保护竹子.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 木材科学 木材科学 木材科学
背景情况:
- 可扩展和高效的竹子美白是一个重要的工业挑战.
- 传统的方法往往涉及强化学品或耗时.
- 开发可持续的竹子加工技术对于材料应用至关重要.
研究的目的:
- 制定一个有效和环保的竹子美白策略.
- 研究光催化氧化对竹子光学和机械性能的影响.
- 将拟议的方法与传统的竹子美白技术进行比较.
主要方法:
- 用过氧化 (H2O2) 透竹子.
- 紫外线照明以启动光催化氧化.
- 白度的表征 (UV-Vis吸收/透射) 和机械性质 (拉伸/弹性强度).
- 使用X射线衍射 (XRD) 分析结构完整性.
主要成果:
- 在8小时的紫外线照射后,达到高白度,显著降低紫外线Vis吸收率 (3.5) 和增加透射率 (0.04%).
- 保存了天然的竹结构和质素含量 (约. 89%),使其具有卓越的机械性能 (拉力30 MPa,曲强度36 MPa).
- 光催化氧化没有改变纤维素晶体结构,XRD证实了这一点.
结论:
- 拟议的光催化氧化方法为竹子美白提供了一种高效,节省时间和环保的替代方案.
- 该过程增强了竹子的美学吸引力和机械性能,而不会造成结构性降解.
- 这种技术有可能为工程应用创造节能,以竹为基础的结构材料.
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