从Imperata cylindrica草中提取纤维素纳米纤维的高通量提取,用于先进的生物复合材料
Ruiwen Yu1, Prabhakar M N2, Jian-Guang Zhai3
1Department of Smart Manufacturing Engineering, Changwon National University, Uichang-gu, Changwon 51140, Gyeongsangnam-do, Republic of Korea.
International journal of biological macromolecules
|November 28, 2024
概括
本研究介绍了一种具有成本效益的方法,从Imperata cylindrica草中提取纤维素纳米纤维 (CNF). 由此产生的CNF显著增强了酸盐复合材料,改善了机械性能,并增加了阻燃性和用石墨烯纳米板块进行EMI屏蔽.
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
背景情况:
- 目前用于提取纤维素纳米纤维 (CNF) 的方法面临成本和效率的局限性.
- 对于可持续和高性能复合材料的需求日益增长.
研究的目的:
- 开发一种新的,具有成本效益的方法,从 Imperata cylindrica 草中提取 CNF.
- 研究这些提取的CNFs (ECNFs) 在增强奇托 (CS) 复合材料中的潜力.
- 通过结合石墨烯纳米板块 (GNP) 来增强CS复合材料的功能.
主要方法:
- 优化化学加工,包括定制的酸比率和ECNF提取的漂白条件.
- 使用里叶变换红外光谱学,X射线衍射,扫描电子显微镜和传输电子显微镜对ECNF的表征.
- 通过溶液造和随后纳入GNP来制造ECNF增强的CS复合膜.
主要成果:
- 成功提取了具有均直径 (90 nm),长度 (11 μm),高晶度 (71.64%) 和小晶体大小 (2.06 nm) 的ECNF.
- ECNF显著提高了CS复合材料的扬模量 (+402%) 和拉伸强度 (+748%) 在2 wt%负载下.
- 混合ECNFs/CS/GNP复合材料显示了增强的热稳定性,阻燃性和电磁干扰 (EMI) 屏蔽.
结论:
- 从 Imperata cylindrica 草中提取高质量的 ECNF 的一种简单且具有成本效益的方法.
- ECNFs充当了有效的基托增强剂,显著提高了机械性能.
- 添加GNP进一步使复合材料具有功能,为各种工业应用提供了更好的热,阻燃和EMI屏蔽性能.
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