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首页> 外文期刊>繊維学会誌 >Effect of the Take-Up Velocity on the Higher-Order Structure of the Melt-Electrospun PLLA/PDLA Blend Fibers
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Effect of the Take-Up Velocity on the Higher-Order Structure of the Melt-Electrospun PLLA/PDLA Blend Fibers

机译：卷绕速度对熔体静电纺PLLA / PDLA共混纤维高阶结构的影响

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摘要

The higher-order structure and the formations of SC and HC of the PLLA/PDLA blend melt-electrospun fibers collected on a rotating target were investigated. The diameter of the fiber decreased and the orientation factor increased with increasing take-up velocity. The formation of SC was promoted with decreasing fiber diameter and with increasing take-up velocity. The fiber collected on the fixed target was amorphous and did not show the molecular orientation to any particular directions indicating that the stretching of the fiber by the electrostatic force did not give much molecular orientation to the fiber. On the other hand, the stretching of the fiber by applying the mechanical taking-up gave a significant degree of the molecular orientation to the fiber direction. The crystalline orientation of HC of the annealed fiber was higher than that of SC.
机译：研究了收集在旋转靶上的PLLA / PDLA共混熔纺电纺纤维的高级结构以及SC和HC的形成。纤维的直径随着卷取速度的增加而减小，而取向因子则增加。随着纤维直径的减小和卷绕速度的增加，促进了SC的形成。收集在固定靶上的纤维是无定形的，并且没有显示出朝向任何特定方向的分子取向，这表明通过静电力对纤维的拉伸不会使纤维具有太多的分子取向。另一方面，通过施加机械卷取来拉伸纤维使分子在纤维方向上的取向度显着提高。退火纤维的HC的晶体取向高于SC的晶体取向。

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  • 来源
    《繊維学会誌》 |2015年第3期|127-133|共7页
  • 作者

    Yamamoto Masaki; Nishikawa Goro; Afifi Amalina M.; Lee Jae-chang; Yamane Hideki;

  • 作者单位

    Kyoto Inst Technol, Grad Sch Sci & Technol, Dept Biobased Mat Sci, Kyoto 6068585, Japan;

    Kyoto Inst Technol, Grad Sch Sci & Technol, Dept Biobased Mat Sci, Kyoto 6068585, Japan;

    Univ Malaya, Dept Mech Engn, Kuala Lumpur 50603, Malaysia;

    Korea Res Inst Chem Technol, Ulsan 681802, South Korea;

    Kyoto Inst Technol, Grad Sch Sci & Technol, Dept Biobased Mat Sci, Kyoto 6068585, Japan;

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