基于纤维素的涂层纸具有高水蒸气屏障特性,通过多层次的结构协同作用来实现可持续的包装
Yi Ning1, Yingying He2, Chunyu Wang1
1State Key Laboratory of Advanced Papermaking and Paper-based Materials, South China University of Technology, Guangzhou, 510640, China.
International journal of biological macromolecules
|January 10, 2026
概括
新的多层纸包装提供了出色的水和油耐用性,延长了草的保质期. 这种可持续的替代品采用改性酸,烯酸乳液和聚乙烯基涂层,以提高屏障性能.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续包装 包装的可持续性
- 聚合物化学 聚合物化学
背景情况:
- 基于纤维素的纸包装是环保的,但缺乏足够的油/水阻力和屏障性能.
- 石化塑料包装带来了环境问题,推动了对可持续替代品的需求.
- 提高纸张的屏障性能对于其在包装中的更广泛采用至关重要.
研究的目的:
- 为食品包装开发一种多层复合纸质材料,具有增强的屏障性能.
- 为了研究改性藻酸盐 (M-SA),烯酸乳液 (AE) 和聚乙 (PVB) 涂料的有效性.
- 评估草上涂层纸的保鲜效果和保质期延长.
主要方法:
- 在用化处理的 Kraft 纸上制造多层涂层 (M-SA/AE/PVB).
- M-SA与Ca2+的离子交联和SiO2纳米粒子的嵌入.
- 描述耐水性 (科布值),耐油性 (Kit评分) 和水蒸气屏障性能.
- 对草的新鲜保存效应的评估,以及对耐用性和可回收性的评估.
主要成果:
- M-SA/AE/PVB涂层纸实现了优异的耐水性 (0.44 g/m2 Cobb),耐油性 (12/12 Kit评级) 和水蒸气屏障 (16.02 g/m2·24h)).
- 多层涂层有效地将草的保质期延长了7天以上.
- 开发的包装材料表现出理想的耐用性和可回收性.
结论:
- 多层复合纸涂层 (M-SA/AE/PVB) 显著提高了屏障性能,克服了传统纸包装的局限性.
- 这种方法为食品包装提供了可持续和有效的解决方案,改善了产品的保质期.
- 开发的纸质材料为传统塑料包装提供了可行的替代品,有助于环境可持续性.
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