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Co-axial electrospinning with sodium thiocyanate solution for preparing polyacrylonitrile nanofibers

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Abstract

A modified co-axial electrospinning process including electrolyte solution as sheath fluid for preparing high quality polymer nanofibers is investigated. A series of polyacrylonitrile (PAN) nanofibers were fabricated utilizing the modified process with sodium thiocyanate solutions in N, N-dimethylacetamide (DMAc) as sheath fluids. Field-emission scanning electron microscopy results demonstrated that the sheath sodium thiocyanate solutions had significant influence on the quality of PAN nanofibers. High quality PAN nanofibers in terms of fiber diameters and their distributions, surface morphology and structure have been successfully produced. The diameters of nanofibers (D, nm) could be manipulated simply by adjusting the concentrations of sodium thiocyanate (C, mg ml-1) in the sheath fluids with a scaling law of D = 324 C -0.1806. The mechanism about the influence of sodium thiocyanate solutions on the formation of PAN fibers is discussed and it is felt that co-axial electrospinning with electrolyte solution is a facile process for achieving high quality polymer nanofibers.

A modified co-axial electrospinning process has been developed for preparing high quality nanofibers with small diameters, narrow size distributions, uniform structures, and smooth surfaces. This process employs NaSCN solutions in DMAc as sheath fluids to facilitate the formation of nanofibers from core polyacrylonitrile solutions

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Acknowledgments

This work was supported by the fundamental research funds for the central universities in China (No. 2010C03-2-1), and the scientific starting funds for young teachers of Donghua University (No. 228-10-0044019).

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Authors and Affiliations

  1. Research Center for Analysis and Measurement, Donghua University, 2999 North Renmin Road, Songjiang District, Shanghai, 201620, People’s Republic of China

    Jian-Mao Yang

  2. School of Materials Science & Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People’s Republic of China

    Deng-Guang Yu

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  1. Jian-Mao Yang
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  2. Deng-Guang Yu
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Correspondence to Jian-Mao Yang.

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Yang, JM., Yu, DG. Co-axial electrospinning with sodium thiocyanate solution for preparing polyacrylonitrile nanofibers. J Polym Res 19, 9789 (2012). https://doi.org/10.1007/s10965-011-9789-x

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  • DOI: https://doi.org/10.1007/s10965-011-9789-x

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