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Citation: Li Cao, Dun-fan Su, Zhi-qiang Su, Xiao-nong Chen. Morphology, Crystallization Behavior and Tensile Properties of -Nucleated Isotactic Polypropylene Fibrous Membranes Prepared by Melt Electrospinning[J]. Chinese Journal of Polymer Science, ;2014, 32(9): 1167-1175. doi: 10.1007/s10118-014-1465-2 shu

Morphology, Crystallization Behavior and Tensile Properties of -Nucleated Isotactic Polypropylene Fibrous Membranes Prepared by Melt Electrospinning

  • 1.

    1. Beijing Laboratory of Biomedical Materials, School of Material Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

  • 2.

    2. Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology, Ministry of Education), Beijing 100029, China

  • 3.

  • 4.

    Beijing Laboratory of Biomedical Materials, School of Material Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

  • 5.

    Key Laboratory of Carbon Fiber and Functional Polymers (Beijing University of Chemical Technology, Ministry of Education), Beijing 100029, China

  • Received Date: 18 March 2014
    Revised Date: 11 April 2014

    Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 20974010), Fundamental Research Funds for the Central Universities (No. ZZ1307) and Program for Changjiang Scholars and Innovative Research Teams in Universities (PCSIRT, No. IRT0807).

  • -nucleated isotactic polypropylene (iPP) fibers with diameters less than 5 mm were prepared through melt electrospinning. The effects of electrospinning process and rare earth -nucleating agent (WBG) on the crystal structure of iPP fibers were investigated. The results indicate that the addition of WBG can improve the fluidity of iPP melt remarkably and help the formation of fine fibers with thinner diameter, while the electrostatic force applied on the iPP melt is not favorable for the formation of -crystal in iPP fibers. In addition, the morphology and crystalline structure of WBG/iPP electrospun fibers depended on the content of WBG. Both the crystallinity and the percentage of -crystal form of WBG/iPP electrospun fibers increase with the rise of the content of nucleating agent, which endows the prepared electrospun fibers excellent mechanical properties. The -nucleated iPP electrospun fibrous membranes prepared in this study can be used for protective clothing material, filtration media, reinforcement for composites and tissue engineering scaffolds.
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