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获取和表征生物基复合PBAT/PLA活性托盘用于新鲜食品包装
Tatiana Jiménez-Ariza1, Sofía Castellanos-González1, Johanna Garavito1
1Food Packaging and Shelf Life Laboratory, Instituto de Ciencia y Tecnología de Alimentos, Universidad Nacional de Colombia, Carrera 30 Número 45-03, Bogotá 111321, Colombia.
Polymers
|March 14, 2026
概括
这项研究开发了可持续的,基于生物的复合材料托盘,使用聚乳酸 (PLA) 和聚乙烯基酸盐 (PBAT). 托盘中包含香草微纤维和薄荷,显示出用于易腐烂产品包装的抗菌性质.
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
- 可持续包装 包装的可持续性
背景情况:
- 对可持续包装解决方案的需求不断增长,以减轻一次性塑料废弃物的使用.
- 需要具有增强功能的可生物降解材料,例如抗微生物活性.
研究的目的:
- 为了生产和表征具有抗菌性质的新型生物基复合材料托盘.
- 为了评估平原微纤维和薄荷醇对复合材料性能的影响.
- 评估这些复合材料对于易腐烂的产品包装的适用性.
主要方法:
- 用PEG塑化并与酸相容的PLA/PBAT混合物的配方.
- 纳入草微纤维 (PFs) 和薄荷作为强化剂和抗菌剂.
- 通过挤出和热成型进行加工;使用机械测试,屏障性质分析,热分析 (DSC,TGA),显微镜 (SEM) 和抗菌检测进行表征.
主要成果:
- 优化的配方:85/15的PLA/PBAT比率,增强了3%的PF.
- 含有5%的薄荷醇显示出对Botrytis cinerea的真菌抑制活性.
- 实现了具有24.137 ± 1.439 MPa抗拉强度的均质板材和具有0.113 ± 0.010 MPa压力强度的托盘.
结论:
- 开发了一种可持续的生物基复合物,具有有前途的抗微生物特性,用于食品包装.
- 复合材料提供良好的机械强度和屏障特性.
- 通过环保包装延长保质期和保存易腐烂产品的潜在应用.
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