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在N-甲基摩尔-N-氧化物中的PAN-纤维素混合溶液中开发纤维素微纤维

Igor Makarov¹, Markel Vinogradov¹, Yaroslav Golubev¹

¹A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky Prospect, 119991 Moscow, Russia.

|July 13, 2024

概括

研究人员通过在N-methylmorpholine-N-oxide (NMMO) 中处理纤维素和聚烯 (PAN) 的混合溶液,创造了具有增强机械性能的新型纤维素微纤维. 这些微纤维表现出一个年轻的年轻人.

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:

纤维素是一种可再生的生物聚合物,在先进材料中具有潜在的应用.
开发控制纤维素形态的方法对于优化其特性至关重要.
以前的研究已经探索了纤维素加工,但缺乏对微纤维素形成的控制.

研究的目的:

为了研究纤维素微纤维素在多烯二 (PAN) 矩阵中的形成.
描述由此产生的纤维素微纤维的形态和机械特性.
评估这些微纤维在复合材料应用中的潜力.

主要方法:

在N-methylmorpholine-N-oxide (NMMO) 中制备纤维素和PAN混合溶液.
控制溶液的挤出,以诱导纤维状形态.
选择性去除PAN以分离纤维素微纤维.
原子力显微镜 (AFM) 用于形态和机械分析.

主要成果:

在高达40%纤维素的纤维素/PAN系统中观察到纤维素形态.
纤维素排序随着纤维素含量下降而增加.
隔离的纤维素微纤维的扬斯模量超过30 GPa.
飞行机组证实了高刚度,并提供了微纤维的地形数据.

结论:

建立了一种在PAN矩阵内生成有序纤维素微纤维的方法.
与传统生产的纤维素纤维相比,分离的纤维素微纤维具有优越的机械性能.
这些发现凸显了NMMO加工的纤维素微纤维在高性能复合材料中的潜力.

关键词:

N-甲基摩尔福林-N-氧化物这就是PAN PAN.纤维素纤维素的使用方法纤维线纤维线机械性能机械性能机械性能微纤维是一种微纤维.

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