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Continuous twisted nanofiber yarns fabricated by double conjugate electrospinning

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Abstract

In order to fabricate continuously twisted nanofiber yarns, double conjugate electrospinning had been developed using two pairs of oppositely charged electrospinning nozzles. The principle and process of this novel yarn spinning method were analyzed, and the effect of applied voltage, nozzle distance between positive and negative, solution flow rate and funnel rotating speed on the diameters, twist level and mechanical properties of resultant PAN nanofiber yarns were investigated in this paper. The results indicated that electrospun nanofibers aggregated stably and bundled continuously at the applied voltage of 18 kV, the nozzle distance of 17.5 cm between positive and negative, the overall flow rate of 3.2 ml/h and the flow ratio of 5/3 for positive and negative nozzles. The resultant nanofiber yarns had favorable orientation and uniform twist distribution, and the twist level of nanofiber yarns increased with the increase of the ratio of funnel rotating speed and winding speed. The diameters and mechanical properties of nanofiber yarns depended on their twist level. The diameters of prepared PAN nanofiber yarns ranged from 50 µm to 200 µm, and the strength and elongation of PAN nanofiber yarns at break were 55.70 MPa and 41.31%, respectively, at the twist angle of 41.8 °. This method can be also used to produce multifunctional composite yarns with two or more components.

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Authors and Affiliations

  1. College of Textiles, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China

    Jianxin He, Yuman Zhou, Pingping Li & Shizhong Cui

  2. Henan Key Laboratory of Functional Textile Materials, Zhongyuan University of Technology, Zhengzhou, 450007, P.R. China

    Jianxin He, Yuman Zhou, Kun Qi & Lidan Wang

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  1. Jianxin He
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  2. Yuman Zhou
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  3. Kun Qi
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  4. Lidan Wang
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  5. Pingping Li
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  6. Shizhong Cui
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Correspondence to Jianxin He.

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He, J., Zhou, Y., Qi, K. et al. Continuous twisted nanofiber yarns fabricated by double conjugate electrospinning. Fibers Polym 14, 1857–1863 (2013). https://doi.org/10.1007/s12221-013-1857-x

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  • DOI: https://doi.org/10.1007/s12221-013-1857-x

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