Electrospinning and Characterization of Aligned Nanofibers from Chitosan/Polyvinyl Alcohol Mixtures: Comparison of Several Target Devices Newly Designed

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  • M. Afifi Amalina
    Division of Materials and Life Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto, 606- 8585, Japan Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
  • Yamamoto Masaki
    Division of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto, 606- 8585, Japan
  • Yamane Hideki
    Dept. of Bio-based Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto, 606- 8585, Japan
  • Kimura Yoshiharu
    Dept. of Bio-based Materials Science, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Kyoto, 606- 8585, Japan
  • El Salmawy Ahmed
    Apparel Department, Faculty of Applied Arts, Helwan University, Cairo, Egypt
  • Nakano Shigeyuki
    Technical Support Center for Textiles Industries, Hyogo Prefectural Institute of Technology, 1790-496 Uenodan, Nomura-cho, Nishiwaki, Hyogo 677-0054, Japan

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Electrospinning of pure chitosan or chitosan/poly(vinyl alcohol) (PVA) (blend) was carried out with an optimization of the electrospinning conditions. The electrospinning of the pure chitosan was only possible at a relatively high electric field of 5 kV/cm into fibers with a diameter as thick as 30 μm, and its reproducibility was very poor. Blending of PVA into chitosan significantly improved the spinnability and the chitosan/PVA blend fiber was electrospun for further characterization. Several target devices were designed and examined to collect aligned nanofibers of chitosan/PVA. The most efficient was a rotating collector having grounded short wire bars arranged on a drum. Over 90 % of electrospun fibers were collected in parallel to the take-up direction with this collector. The fiber alignment was further improved with increasing the collector rotation speed up to a maximum speed of 4.7 m/s. The aligned chitosan/PVA fibers were subjected to drawing to 1.5 times and the crystallization of chitosan fractions was induced without indicating the clear crystal orientation.

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  • 繊維学会誌

    繊維学会誌 67 (5), 103-108, 2011

    社団法人 繊維学会

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