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一种具有高抗拉强度和快速自我愈合特性的co-type柔性薄膜,用于塑形果物保存
Li Liu1, Yuancheng Zhang1, Fengqiong Jiang1
1School of Chemistry and Chemical Engineering, Guangxi i University, Nanning 530004, P. R. China. lbf@gxu.edu.cn.
Journal of materials chemistry. B
|March 8, 2024
概括
研究人员从聚乙醇 (PVA) - borax,碳甲基纤维素 (CMC) 和酸 (TA) 开发了一种新的低能耗水凝膜. 这种可生物降解的薄膜具有优越的强度,自我愈合和抗菌特性,可以延长水果和蔬菜的新鲜度.
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
- 生物材料是一种生物材料.
背景情况:
- 基于石油的塑料是能源密集的,不可生物降解的,缺乏抗微生物特性,限制了食品的保存.
- 当前的塑料替代品往往需要专门的设备和高能量投入生产.
- 需要可持续的,功能性的薄膜来延长水果和蔬菜的保质期.
研究的目的:
- 开发一种新的,低能耗的,不需要设备的方法来生产多功能水凝膜.
- 为了研究CMC/TA@PVA-borax复合水凝 (CTPB) 对于食品包装应用的特性.
- 评估CTPB薄膜在减少塑料污染和改善食品保存方面的潜力.
主要方法:
- 一种使用PVA-borax凝作为基质的同类型的薄膜成型方法,结合CMC和TA.
- 描述CTPB水凝的机械性能,包括抗拉强度和自我愈合能力.
- 评估水凝膜的抗菌活性,粘附性质,生物安全性和生物降解性.
主要成果:
- 由于动态氧和结合,CTPB水凝具有超高的抗拉强度 (>5500%) 和快速自我愈合 (<8秒).
- 水凝膜显示出显著的抗微生物特性,这归因于TA和的协同作用.
- 这些膜显示出出色的粘附性,生物安全性,生物降解性以及在保存水果方面有效的性能.
结论:
- 开发的CTPB水凝为食品包装的传统塑料提供了一个可持续的,低能耗的替代品.
- 片的独特特性,包括强度,自我愈合和抗菌活性,增强了食品的保存.
- 这种方法为生产功能薄膜提供了一种方便的方法,有助于减少塑料垃圾.
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