提高非火山化聚乳酸基热塑性天然的柔性和性能,使用乙三酸
Donlaporn Koedthip1, Ekwipoo Kalkornsurapranee2, Karnda Sengloyluan3
1Program of Food Packaging Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat-Yai 90110, Songkhla, Thailand.
Polymers
|March 13, 2025
概括
这项研究使用乙三酸 (ATBC) 塑化剂增强了多乳酸/天然混合物. 生物降解产品的最佳性能是通过特定的比率和时间来实现的,提高了柔性和低温性能.
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) 和天然 (NR) 混合物正在探索可生物降解的应用.
- 提高PLA/NR混合物的柔性和机械性能对于更广泛的材料使用至关重要.
- 乙支柱酸盐 (ATBC) 作为PLA/NR系统的增塑剂和兼容剂正在研究中.
研究的目的:
- 研究时间和ATBC增塑剂对PLA/NR混合物特性的影响.
- 为了确定塑化PLA (P-PLA) 与NR的最佳重量比,以提高性能.
- 评估ATBC作为非化PLA/NR混合物中的兼容剂的作用.
主要方法:
- 使用因数设计研究时间,ATBC添加和混合物重量比率.
- 评估了机械性能 (冲击强度,性) 和热性能 (玻璃过渡温度).
- 使用热分析进行了形态分析 (可混合性,分散性).
主要成果:
- 塑化PLA (P-PLA) 基热塑性塑料成功形成,具有增强的可塑性.
- 在90/10的P-PLA/NR比率下实现了最佳性能,具有显著的冲击强度和性.
- ATBC同时起到塑化剂和兼容剂的作用,60分钟的NR是兼容性的最佳时间.
- 较低的NR含量 (10%重量) 提高了可混合性和分散性,而增塑剂和NR降低了玻璃过渡温度 (Tg).
结论:
- 这项研究表明,ATBC有潜力增强PLA/NR混合物特性,创造灵活的可生物降解材料.
- 最佳的混合物成分和加工条件 (时间) 是实现卓越机械性能的关键.
- 这些发现表明,在需要提高灵活性和低温特性的可生物降解产品中的应用,为合成兼容剂提供了替代方案.
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