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溶解-共催化策略用于制备柔性和湿稳定的纤维素膜,以实现可生物降解的包装

Huimei Zhou¹, Tianqi Li¹, Enqing Zhu¹

¹Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.

International journal of biological macromolecules

|July 4, 2024

概括

这项研究从硬木纸中开发了一种高性能纤维素膜,增强机械强度,耐水性和氧障碍物质. 由此产生的生物降解材料为包装应用提供了一个可持续的替代方案.

科学领域:

材料科学材料科学材料科学
生物质利用生物质的利用
可持续化学可持续化学

背景情况:

纤维素是一种可再生资源,但在高价值应用中往往缺乏机械和防水性能.
实现循环经济需要从可持续生物质中开发先进材料.
改进纤维素基材料对于其更广泛的工业应用至关重要.

研究的目的:

为制备具有增强机械,防水和氧障碍性能的高性能纤维素膜.
为了研究化 (EPI) 交联对纤维素膜特征的影响.
为了评估开发的纤维素膜的生物降解性,以实现可持续的包装.

主要方法:

使用来自漂白硬木纸 (HBKP) 的AlCl3/ZnCl2/H2O溶液溶解纤维素.
纤维素与化水素 (EPI) 的化学交联,以改善材料的性能.
优化EPI添加序列,数量和交叉连接时间,以提高膜性能.
机械强度,耐水性,氧气屏障能力和生物降解性的表征.

主要成果:

在24小时内使用7%重量的EPI进行了优化交叉连接,产生了133MPa的拉伸应力和17%的应变.
膜表现出优异的氧气绝缘性 (1.1 ± 0.31 × 10^-4 cm^3/m^2·d·Pa) 和防水性 (在450天后没有胀).
纤维素膜在大约20天内被微生物有效生物降解.

结论:

通过使用一种新的溶剂系统和交联方法,成功制备了一种高性能,可生物降解的纤维素膜.
开发的膜具有卓越的机械,屏障和防水性能,适合先进的应用.
这种基于纤维素的材料为包装行业提供了一个有希望的可持续和环保的替代品.

关键词:

纤维素膜的纤维素膜是什么化学交叉连接化学交叉连接可降解性可降解性可持续发展可持续性可持续性湿地稳定性湿地稳定性

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