竹子的转化:从多尺度纤维到坚固和可降解的纤维素基材料,以替代塑料
Juan Hu1,2, Yahui Zhang1, Yingqi He1
1Research Institute of Wood Industry, Chinese Academy of Forestry, Haidian, Beijing, 100091, China.
Small (Weinheim an der Bergstrasse, Germany)
|April 21, 2025
概括
研究人员使用多尺度接口工程开发了一种可成型的竹纤维素材料. 这种强大的,可生物降解的替代品为塑料提供了优越的性能,促进了可持续材料的发展.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 可持续的高分子.
背景情况:
- 传统的塑料带来了环境挑战.
- 竹子为可持续的替代品提供了快速增长和可再生性.
- 很难实现具有高强度和生物降解性的变形竹子.
研究的目的:
- 将天然竹转化为坚固,可生物降解和可塑性材料.
- 克服竹基材料的形状变化和机械性能方面的局限性.
- 开发一种可行的竹子衍生替代传统塑料的替代品.
主要方法:
- 自然竹的多尺度接口工程.
- 将其分解成宏纤维和纳米纤维.
- 物理和化学纤维处理,包括表面电荷修饰,离子交联和结.
主要成果:
- 开发了一种可塑性竹纤维素基材料,具有高特异强度 (≈271.8 kN m kg−1) 和冲击性 (≈58 kJ m−2).
- 实现了出色的生物降解性,低热膨胀 (1.19 × 10−6 K−1) 和可定制的机械性能.
- 与商业塑料和其他生物质材料相比,其表现优越.
结论:
- 多尺度接口工程成功创建了一个高性能,可模塑的竹纤维素材料.
- 该材料显示出替代塑料和推动环保材料开发的巨大潜力.
- 可定制的机械性能使多功能应用成为可能,从异性质结构到同性质结构.
相关概念视频
01:15Cellulose and Pectic Polysaccharides
3.4K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.4K
01:02Role of Microtubules in Cell Wall Deposition
2.3K
Microtubules are small hollow tubes in eukaryotic cells. The cell wall microtubules are polymerized dimers of two globular proteins, α-tubulin and β-tubulin, two globular proteins. With a diameter of about 25 nm, microtubules are the widest components of the cytoskeleton. They help the cell resist compression and provide a track along which vesicles move through the cell or pull replicated chromosomes to opposite ends of a dividing cell. Microtubules go through quick cycles of...
2.3K
01:20Types of Step-Growth Polymers: Polyesters
2.2K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
2.2K