Orthogonal design study on factors affecting the degradation of polylactic acid fibers of melt electrospinning

Authors

  • Fengwen Zhao,

    1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
    2. College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
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  • Yong Liu,

    Corresponding author
    1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
    Current affiliation:
    1. G 40 Clark Hall, Cornell University, Ithaca, New York 14850
    • College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
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  • Huilin Yuan,

    1. College of Materials Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
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  • Weimin Yang

    1. College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, 100029 Beijing, China
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Abstract

Melt electrospinning is a much simpler and safer method in the production of ultra-fine fibers compared with solution electrospinning. However, high-spinning temperature usually leads to serious degradation of polymer materials. In determining factors that affect the relative molecular mass of polylactic acid (PLA) fibers during melt electrospinning, an orthogonal design method was used to examine the influence of melting temperature, spinning distance, and species and content of antioxidants. Results showed that antioxidant content at the present three levels (i.e., 0.1%, 0.3%, and 0.5%) has the most considerable effect on the relative molecular mass of PLA fibers. Error analysis showed that changes in temperature, distance, and antioxidant content influence the experiment's results significantly. All interaction effects were larger than those of the single factor in the experimental results. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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