使用环氧大豆油作为有效的兼容剂,提高聚乳酸/聚烯碳酸盐混合物的性能
Lixin Song1, Weihan Chi1, Qian Zhang1
1College of Materials Science and Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China.
International journal of biological macromolecules
|October 13, 2023
概括
环氧化大豆油 (ESO) 通过提高兼容性和机械性能,增强了多乳酸/多碳酸 (PLA/PPC) 混合物,可达到5倍. 过度的ESO会降低混合性能和形态.
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
- 复合材料 复合材料 复合材料
背景情况:
- 聚乳酸 (PLA) 和聚烯碳酸 (PPC) 是广泛使用的可生物降解聚合物.
- 提高PLA/PPC混合物的兼容性和机械性能对于它们更广泛的应用至关重要.
- 环氧化大豆油 (ESO) 是一种生物基塑化剂和兼容剂.
研究的目的:
- 调查环氧化大豆油 (ESO) 含量对PLA/PPC混合物特性的影响.
- 为了确定最佳的ESO度,以提高混合物的兼容性和机械性能.
- 了解PLA/PPC/ESO混合物的界面反应和形态变化.
主要方法:
- 制备PLA/PPC/ESO混合物与不同的ESO成分.
- 热,光学,学和机械性能的表征.
- 使用扫描电子显微镜 (SEM) 对混合物形态的显微镜分析.
主要成果:
- ESO充当兼容剂,在PLA/PPC接口上形成化学键,改善混合性.
- 增加ESO含量从1-5 phr提高了分解温度,模量,粘度,冲击强度和破裂时的延伸.
- 在 5 phr ESO 达到最佳性能,显著增加性 (在断裂时延长翻倍),同时保持拉伸强度和透射率.
- 过度的ESO (6 phr) 降低了兼容性,导致机械性能退化和形态变化.
结论:
- 氧化大豆油 (ESO) 是PLA/PPC混合物的有效兼容剂.
- 可控添加ESO (高达5phr) 显著提高机械性能,特别是性,而不损害光学清晰度或刚性.
- 最佳的ESO含量平衡改善了接口粘附,而过度塑化可能会产生负面影响.
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