通过木纤维和自组装核化剂的协同作用,增强聚乳酸基生物复合材料的界面相互作用和结晶
Chao Lv1, Shupin Luo1, Wenjing Guo1
1Research Institute of Wood Industry, Chinese Academy of Forestry, No. 2 Dongxiaofu, Haidian District, Beijing 100091, China.
International journal of biological macromolecules
|October 6, 2023
概括
这项研究通过将木纤维 (WF) 与核化剂 (TMC-300) 结合起来,增强了多乳酸 (PLA) 生物复合材料. 这提高了接口粘附性,结晶性和机械性能,提供了可持续的材料解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 复合材料 复合材料 复合材料
背景情况:
- 聚乳酸 (PLA) 中的天然纤维提供了可持续的性能改善.
- 接口粘附是天然纤维增强的PLA生物复合材料的一个关键限制.
- 增强纤维矩阵相互作用对于卓越的机械性能至关重要.
研究的目的:
- 为了改善基于PLA的生物复合材料的界面相互作用,结晶和机械性能.
- 研究木纤维 (WF) 和自组装核化剂 (TMC-300) 的协同效应.
- 探索TMC-300对WF表面形态和PLA结晶的影响.
主要方法:
- 在PLA生物复合材料中使用了木纤维 (WF) 和自组装核化剂 (TMC-300).
- 分析了界面晶体形态,结晶行为和机械性能.
- 研究了TMC-300在WF表面上的自组装机制.
主要成果:
- TMC-300在WF上自组装成树突结构,促进表轴性PLA结晶并增强界面粘附.
- 最佳的TMC-300含量 (0.5%重量%) 导致曲强度增加10%,划痕冲击强度增加69%.
- TMC-300和WF作为核化剂协同作用,加速结晶并增加PLA结晶性.
结论:
- WF和TMC-300的组合有效地提高了PLA生物复合材料的界面粘接和机械性能.
- 在WF表面上自组装TMC-300是改善复合材料性能的关键机制.
- 这种方法为开发高性能,可持续的天然纤维/PLA生物复合材料提供了一种新的战略.
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