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Controlling the elasticity of polyacrylonitrile fibers via ionic liquids containing cyano-based anions.

ABSTRACT: As the predominant precursor for high-performance carbon fiber manufacturing, the fabrication of polyacrylonitrile (PAN)-based composite fibers attracts great interest. Ionic liquids (ILs) have recently been investigated for melt-spinning of ultrafine PAN fibers. The plasticizing properties of ILs are significantly affected by the structure of ILs and can be influenced by electronegativity, steric effects, etc. Herein, we report a facile strategy to control the elasticity of the PAN/ILs fibers by tuning the anion structure of ILs. Particularly, the ILs containing nitrile-rich groups exhibited enhanced plasticizing effect and nucleating ability on dissolving PAN components, achieving highly stretchable PAN/ILs fibers.

SUBMITTER: Wang Z

PROVIDER: S-EPMC8984951 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Controlling the elasticity of polyacrylonitrile fibers <i>via</i> ionic liquids containing cyano-based anions.

Wang Zongyu Z Luo Huimin H Martin Halie J HJ Wang Tao T Sun Yifan Y Arnould Mark A MA Thapaliya Bishnu P BP Dai Sheng S

RSC advances 20220318 14

As the predominant precursor for high-performance carbon fiber manufacturing, the fabrication of polyacrylonitrile (PAN)-based composite fibers attracts great interest. Ionic liquids (ILs) have recently been investigated for melt-spinning of ultrafine PAN fibers. The plasticizing properties of ILs are significantly affected by the structure of ILs and can be influenced by electronegativity, steric effects, <i>etc.</i> Herein, we report a facile strategy to control the elasticity of the PAN/ILs f ...[more]

PMID: 35424785

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