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http://dx.doi.org/10.5850/JKSCT.2013.37.2.224

Fabrication of Core-Sheath Nanocomposite Fibers by Co-axial Electrospinning  

Kang, Minjung (Dept. of Clothing & Textiles, Yonsei University)
Lee, Seungsin (Dept. of Clothing & Textiles, Yonsei University)
Publication Information
Journal of the Korean Society of Clothing and Textiles / v.37, no.2, 2013 , pp. 224-234 More about this Journal
Abstract
This study investigates the fabrication of core-sheath nanocomposite fibers by locating germanium (Ge) and silicon dioxide ($SiO_2$) nanoparticles selectively in the sheath layer by co-axial electrospinning. Co-axially spun fibers were prepared by electrospinning a pure PVA solution and Ge/$SiO_2$/PVA solution as the core and sheath layer, respectively. Core-sheath nanocomposite fibers were electrospun under a variety of conditions that include various feed rates for the core and sheath solutions, voltages, and concentric needle diameters, in order to find an optimum spinning condition. Ge/$SiO_2$ nanocomposite fibers were also prepared by uniaxial electrospinning to compare fiber morphology and nanoparticle distribution with core-sheath nanofibers. Using scanning electron microscopy, transmission electron microscopy, and energy dispersive X-ray analysis, it was demonstrated that the co-axial approach resulted in the presence of nanoparticles near the surface region of the fibers compared to the overall distribution obtained for uni-axial fibers. The co-axially electrospun Ge/$SiO_2$/PVA nanofiber webs have possible uses in high efficiency functional textiles in which the nanoparticles located in the sheath region provide enhanced functionality.
Keywords
Core-sheath nanofiber; Co-axial electrospinning; Germanium; Silicon dioxide; Nanoparticle;
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Times Cited By KSCI : 5  (Citation Analysis)
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