聚 (乳酸) 和聚烯碳酸盐混合物的创新功能兼容性策略实现了卓越的性,可降解性和光学性能
Ying Jing1, Weihan Chi1, Wei Zhang2
1Liaoning Provincial Key Laboratory for Synthesis and Preparation of Special Functional Materials, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China; College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
International journal of biological macromolecules
|September 20, 2024
概括
双伊他康酸 (DBI) 通过形成共聚合物,增强了聚 (乳酸) 和聚烯碳酸盐混合物的兼容性,显著改善了可生物降解复合材料应用的性,降解性和光学性能.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
背景情况:
- 聚乳酸 (PLA) 和聚烯碳酸盐 (PPC) 混合物是有前途的生物降解材料.
- 提高PLA/PPC混合物的兼容性和性能对于其更广泛的应用至关重要.
- 化学修饰提供了一条提高聚合物混合性能的途径.
研究的目的:
- 调查迪布伊他康酸盐 (DBI) 对PLA/PPC混合物的兼容性和性能的影响.
- 探索DBI作为PLA/PPC兼容剂的机制.
- 评估改性混合物的热,光学,机械和降解特性.
主要方法:
- 系统地向PLA/PPC混合物添加不同数量的迪布伊他酸盐 (DBI).
- 混合物属性的表征包括热 (Tg),机械 (破裂时延长,有的冲击强度),质 (复杂粘度),光学 (雾,透射率) 和降解行为.
- 混合物断裂表面的微结构分析.
- 化学反应分析以确认共聚合物形成.
主要成果:
- DBI与PLA和PPC发生化学反应,形成PLA-co-DBI-co-PPC共聚合物,在8重%的DBI中实现完全兼容.
- 最佳的灵活性在10%重量%DBI下实现,与整洁混合物相比,破裂时的延长增加了13.7倍,口冲击强度是2.5倍.
- 由于促进水解,提高了降解性能,最大质量损失率为84.1% (与整洁混合物的20.3%相比).
- 显著改善光学特性:雾从37.1%减少到11.1%,同时保持>92.4%的光传导率.
结论:
- DBI是PLA/PPC混合物的有效兼容器,可以创建具有增强性能的完全兼容系统.
- 经过修改的PLA/PPC混合物表现出优越的性,降解性和光学特性.
- 这些发现为开发高性能,可生物降解的基于PLA的复合材料提供了一种新方法,用于各种应用,包括包装,农业和3D打印.
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