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Enhanced mechanical properties and pre-tension effects of polyurethane (PU) nanofiber filaments prepared by electrospinning and dry twisting

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Abstract

We studied the mechanical properties of polyurethane (PU) nanofiber filaments prepared by electrospinning and dry twisting, and compared them with those of the corresponding nonwoven PU nanofiber webs. The morphologies and mechanical properties of the nonwoven PU nanofiber webs and the corresponding PU nanofiber filaments were investigated by scanning electron microscopy (SEM) and through the use of a universal testing machine (UTM), respectively. The tensile strength and the Young’s modulus of the nanofiber filaments improved dramatically as the number of twists or the width of the nanofiber webs was increased compared with the nonwoven PU nanofibers. Moreover, it was found that applying pre-tension was an effective method of increasing the mechanical properties of PU nanofiber filaments.

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Acknowledgement

This work was supported by grant-in-aid for the Global COE Program by the Ministry of Education, Culture Sports Science, and Technology, Japan.

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Authors and Affiliations

  1. Nano Fusion Technology Research Group, Faculty of Textile Science & Technology, Shinshu University, Ueda, Nagano, 386-0015, Japan

    Yujin Lee, Byoung-Suhk Kim & Ick-Soo Kim

  2. Department of Textile Engineering, Konkuk University, Seoul, 143-701, South Korea

    Joo Hyung Hong & Hyungsup Kim

  3. School of Textiles, Yeungnam University, Gyeongsan, Gyeongbuk, 712-749, South Korea

    Soonjee Park

Authors
  1. Yujin Lee
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  2. Byoung-Suhk Kim
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  3. Joo Hyung Hong
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  4. Soonjee Park
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  5. Hyungsup Kim
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  6. Ick-Soo Kim
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Corresponding authors

Correspondence to Byoung-Suhk Kim or Ick-Soo Kim.

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Lee, Y., Kim, BS., Hong, J.H. et al. Enhanced mechanical properties and pre-tension effects of polyurethane (PU) nanofiber filaments prepared by electrospinning and dry twisting. J Polym Res 19, 9774 (2012). https://doi.org/10.1007/s10965-011-9774-4

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  • DOI: https://doi.org/10.1007/s10965-011-9774-4

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