强大而又坚固的透明纸,具有出色的折叠性
Xiaoqi Lin1, Yujie Li1, Zhiqiang Fang1
1State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong, 510640, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|April 1, 2024
概括
研究人员从木纤维中开发出强硬,坚固的透明纸. 这种可持续的塑料替代品拥有高光透射率和优异的机械性能,包括特殊的折叠耐久性.
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
- 可持续化学 可持续化学
背景情况:
- 来自木纤维的透明纸张为塑料提供了一个可持续的替代品.
- 在充分描述和优化木制透明纸的机械性能方面,仍然存在挑战.
- 开发高性能透明纸张需要创新的纤维修饰技术.
研究的目的:
- 从具有增强机械性能的木纤维制备出强壮,坚固和高度透明的纸张.
- 研究纤维结构修改在提高纸张性能方面的作用.
- 为木材材料提供可行的途径,以取代不可再生塑料.
主要方法:
- 使用微波辅助的深溶解剂 (DES) 纤维化 (胆化物/乳酸) 来分离杉木纤维.
- 部分破坏了S1纤维层,产生了微纤维,以提高纤维素的可访问性.
- 应用碳基甲基化处理以产生均膨胀的碳基甲基化木纤维 (CM纤维),以改善纤维间的相互作用.
主要成果:
- 在550nm时达到90%的光传导率.
- 证明了优越的机械性能:折叠耐力>26,000,拉力强度为248.4MPa,性为15.6MJ m-3.3.
- 经过修改的纤维结构和改进的相互作用导致了提高纸张性能.
结论:
- 从木纤维成功制造出一种高性能透明纸.
- 开发的方法为创建具有与塑料竞争力的特性可持续材料提供了一个有希望的策略.
- 这一进步为传统上需要高性能塑料的应用中使用木材材料开辟了可能性.
相关概念视频
01:15Brick Durability, Strength, and Appearance
Brick durability, strength, and appearance are crucial factors in construction, influencing the choice of bricks for specific applications. The process of freeze-thaw, for instance, significantly affects brick durability. This phenomenon occurs when water absorbed by a brick expands as it freezes, potentially causing damage when it melts and refreezes. Bricks are graded for durability: SW-grade bricks are the most durable, offering high strength and low water absorption, followed by MW-grade...
01:22Toughness and Hardness of Aggregate
Toughness and hardness are critical properties of aggregate materials used in concrete, particularly on pavement surfaces and industrial flooring subjected to heavy loads. Toughness is defined as the aggregate's resistance to failure by impact and is measured by the aggregate impact value (AIV). For this, the aggregate impact value test is performed, wherein the impact is delivered by a standard hammer, which falls freely under its own weight onto the aggregates. The aggregates fragment in the...