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Effect of spinning conditions on the mechanical properties of PA6/MWNTs nanofiber filaments

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Abstract

Carbon nanotube (CNT ) reinforced composite materials is a hot research issue now , but CNT/polymer composite nano-scale fibers still cannot be obtained readily, not mention to successfully prepare continuous CNTs/polymer composite nano-scale fiber filaments manufactured by electrospinning. In this paper, continuous filaments constructed of nano-scale PA6/MWNTs fibers in single-axis orientation were obtained by an improved wet-electrospinning technique. The effects of the concentrations of MWNTs, spinning speed and post-drawing on the mechanical properties of PA6/MWNTs nanofiber filaments were studied. The results show that when the concentrations of MWNTs is below 0.8 wt%, the increase of MWNTs content enhances the Young’s modules and breaking stress but reduces the breaking strain, while the breaking stress decreases when the MWNTs concentration exceeds 0.8 wt%. The Young’s modules and breaking stress increased as the spinning speed raised at the range of 1.8–9.0 m/min, but declined when the speed exceeded 9.0 m/min. The mechanical properties of the as-spun filaments can be improved by either dry or wet post-drawing, and the breaking stress of the wet post-drawn filaments was improved 2.64 times while that of the dry post-drawn filaments 2.28 times.

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Acknowledgements

Financial support for this work was provided by the Science and Technology Project of Jiangsu Province (BK2008151) and Creative Research Project for Graduate Students of Jiangsu Province(CX09B_026Z) and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Authors and Affiliations

  1. College of Textile and Clothing Engineering, Soochow University, Suzhou, 215006, China

    Yang Liu, Jie Li & Zhi-juan Pan

  2. National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, 215123, China

    Zhi-juan Pan

Authors
  1. Yang Liu
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  2. Jie Li
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  3. Zhi-juan Pan
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Correspondence to Zhi-juan Pan.

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Liu, Y., Li, J. & Pan, Zj. Effect of spinning conditions on the mechanical properties of PA6/MWNTs nanofiber filaments. J Polym Res 18, 2055–2060 (2011). https://doi.org/10.1007/s10965-011-9614-6

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  • DOI: https://doi.org/10.1007/s10965-011-9614-6

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