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光聚乳酸复合材料,包含基于木质素的碳量子点,用于可持续的4D打印应用
Zechun Ren1, Kejiao Ding1, Xinyuan Zhou1
1Material Science and Engineering College, Northeast Forestry University, Harbin, 150040, China.
International journal of biological macromolecules
|August 1, 2024
概括
研究人员开发了一种新的,低成本的光聚乳酸 (PLA) 复合纤维丝,用于4D打印. 这种材料结合了增强的性和明亮的光,提供了多功能应用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 4D打印材料将刺激响应特性与增材制造相结合.
- 光材料为先进的应用提供独特的光学性能.
- 开发具有成本效益和高性能光4D打印材料仍然是一个挑战.
研究的目的:
- 为4D打印应用开发一种新的,低成本的光复合纤维.
- 增强聚乳酸 (PLA) 的机械性能,特别是性.
- 为了将稳定的光纳入PLA矩阵,用于多功能材料设计.
主要方法:
- 使用绿色素衍生的碳量子点 (CQD) 作为光元件.
- 嵌入可再生聚乙烯碳酸 (PPCU) 聚氨 (PPCU) 用于材料硬化.
- 使用简单的融挤出方法开发了复合纤维.
主要成果:
- 实现了一种具有维持强度 (32 MPa) 和破裂时延伸度增加8倍的PLA复合纤维.
- 证明了出色的形状固定 (∼99%) 和形状恢复 (∼92%) 比例与快速恢复速度.
- PPCU成功地防止了光灭,在紫外线下使亮绿色光成为可能;材料表现出适合3D打印的剪切稀释行为.
结论:
- 通过一种具有成本效益的方法,成功制造出一种强大,坚固和光的PLA复合纤维.
- 开发的材料具有出色的形状记忆性能和可用于3D打印的可加工性.
- 这项工作提出了一种多功能和方便的方法,用于创建具有增强应用潜力的多功能PLA材料.
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