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基于香的阻燃剂使聚乳酸高效防火,抗紫外线和氧气屏障成为食品包装的阻燃剂
Shengtao Zhang1, Wenjie Yang2, Bohan Li1
1School of Energy, Materials and Chemical Engineering, Hefei University, 99 Jinxiu Avenue, Hefei, Anhui 230601, PR China.
International journal of biological macromolecules
|August 11, 2024
概括
这项研究增强了聚乳酸 (PLA) 与六基替代循环三酸 (HVP),以提高耐火性和屏障性能. 新的复合材料显示出更安全,更有效的食品包装的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 可持续材料 可持续材料
背景情况:
- 聚乳酸 (PLA) 具有生物相容性和生物降解性,但具有易燃性和较差的屏障性能.
- 提高PLA的性能对于扩大其应用,特别是在包装方面至关重要.
研究的目的:
- 为了合成和表征一种新的生物基化合物,六基替代循环三酸 (HVP),以改善PLA.
- 评估PLA/HVP复合材料的耐火性,紫外线稳定性和屏障性能.
主要方法:
- 六氧化替代循环三酸 (HVP) 是从香草素和六化循环三酸中合成的.
- 用不同的HVP度制备的PLA/HVP复合材料.
- 使用UL-94和限制氧指数 (LOI) 测试评估的耐火性.
- 圆热量计用于评估热释放率和点火时间.
- 测量氧气传递率 (OTR) 以评估屏障特性.
- 食品包装性能评估使用果随时间的减肥.
主要成果:
- PLA / 3HVP复合材料获得了UL-94 V-0等级和26.5%的LOI,表明具有显著的阻燃性.
- 与纯PLA相比,圆热量计显示PLA/HVP的点火时间增加和峰值热释放率降低.
- 与纯PLA相比,PLA/3HVP的氧气传递率下降了81.1%.
- 用PLA/3HVP薄膜包装的果在7天内体重减轻了很少 (2.2%),证明了有效的保存.
结论:
- 添加HVP有效地提高了PLA的耐火性和屏障性能.
- PLA/HVP复合材料显示出作为要求高的应用程序的先进材料的前景,包括食品包装.
- 这种基于生物的方法提供了一种可持续的解决方案,以改善PLA的性能限制.
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