基于多功能纤维素纳米纤维的复合膜具有卓越的机械强度和阻燃性
Xinmiao Qi1, Jianzheng Qiao2, Mingyi Liu1
1College of Chemistry and Chemical Engineering, Central South University of Forestry and Technology, Changsha 410004, China.
International journal of biological macromolecules
|February 12, 2025
概括
研究人员使用纳米纤维和金属有机框架开发了一种阻燃纤维素复合膜 (CCTCo). 这种高性能材料提高了可持续包装应用的安全性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 基于纤维素的薄膜面临着阻碍其应用的可燃性挑战.
- 开发阻燃材料对于扩大纤维素纳米复合材料的使用至关重要.
研究的目的:
- 为了创建一个高性能复合膜,增强机械强度和阻燃性.
- 为了克服纤维素纳米纤维 (CNs) 薄膜固有的易燃性,用于先进的应用.
主要方法:
- 使用纤维素纳米纤维 (CNs),酸盐纳米纤维,碳点和基于Co的金属有机框架 (Co-MOFs) 制造复合膜 (CCTCo).
- 利用一种名为SPFN的新策略,涉及表面电荷逆转,形态调制,纳米粒子结合和网络构建.
- 评估的机械性能 (拉力强度,破裂时的延长) 和阻燃性 (热释放率).
主要成果:
- CCTCo膜的抗拉强度为39.8MPa,破裂时的延长率为37.5%.
- 与纯CNs薄膜相比,达到86.2%的峰值热释放率下降和44.1%的总热释放率下降.
- 机理学研究验证了SPFN策略在改善薄膜特性方面的有效性.
结论:
- 开发的CCTCo复合膜提供了卓越的机械和阻燃性能.
- 该SPFN战略有效地解决了基于CN的薄膜的可燃性限制.
- 这一进步为下一代多功能片,特别是可持续包装具有重大潜力.
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