Abstract
ABSTRACTMelt differential centrifugal electrospinning (MDCE) method is proposed by integrating the advantages of centrifugal spinning and melt differential electrospinning, including high efficiency, solvent‐free, multiple jets formation from nozzle‐less spinning system, and small diameter. A mathematical model of jet diameter in MDCE is established. An orthogonal experiment is carried out to explore the effects of main processing parameters on the average diameter and the diameter standard deviation of the prepared fibers. Ultimately, polypropylene (PP) nanofibers with an average diameter of 790 nm are successfully prepared in a higher flow rate of 124.26 g h−1 than that of other methods. The X‐ray diffraction and differential scanning calorimeter indicate that the introduction of high‐voltage electrostatic field in centrifugal spinning contribute to the crystal orientation of the PP molecular chain. Therefore, tensile mechanical strength is enhanced as the increase of the loading voltage. MDCE may provide an efficient and eco‐friendly method for nanofiber manufacturing in the future. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48299.
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