来自葡萄芽的创新包装:一种基于纤维素气凝的循环经济解决方案,用于葡萄酒行业,使用PLA作为增强剂
Paula García-Abril1, Amparo López-Rubio2, Miguel Sánchez-Soto3
1Aerofybers Technologies SL. Parc Científic (UV), Carrer del Catedràtic Agustín Escardino Benlloch, 9, 46980 Paterna, Valencia, Spain; Food Safety and Preservation Department, IATA-CSIC, Carrer del Catedràtic Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
International journal of biological macromolecules
|September 8, 2025
概括
研究人员从植物废物中开发了可持续的气凝,用于保护性包装. 这些轻量级,可生物降解的材料提供了优良的绝热和增强的机械强度,支持循环经济原则.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 生物材料工程 生物材料工程
背景情况:
- 农业废物流的利用对于可持续的工业实践至关重要.
- 基于纤维素的气凝具有可调节的特性,但通常需要对表面进行修改以提高性能.
- 葡萄树的芽和白树的生物质代表了丰富的,未充分利用的菌素资源.
研究的目的:
- 从工业用Kraft处理的葡萄芽和树纤维素中制造出高度多孔,轻质的气凝.
- 通过聚乳酸 (PLA) 涂层来提高这些气凝的疏水性和机械抗性.
- 评估这些改性气凝作为可持续和可生物降解的保护性包装的潜力.
主要方法:
- 使用工业 Kraft 处理从葡萄树芽和树中提取纤维素.
- 通过冷干燥或类似的技术制造气凝.
- 通过喷雾和用聚乳酸 (PLA) 涂抹喷雾和管道进行疏水和机械增强.
- 气凝属性的表征,包括密度,压力强度和导热性.
主要成果:
- 开发出具有低密度的气凝,密度在23-80kg/m3之间.
- 在涂上PLA后,压力强度显著增加 (高达20倍,达到1.54N/cm2).
- 保持在0.0305W/mK附近的低导热值.
- 经过涂层后,证明了改善的疏水性和机械抗性.
结论:
- 从废弃生物质中提取的PLA涂层纤维素气凝在保护性包装应用中表现有前途.
- 开发的材料提供了保温,机械强度和生物降解性的良好平衡.
- 这种方法有助于循环经济,通过将农业废物转化为高性能功能材料.
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