Mechanical properties of titania nanofiber mats fabricated by electrospinning of sol–gel precursor |
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| Authors: | Soo-Jin Park George G Chase Kwang-Un Jeong Hak Yong Kim |
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| Institution: | (1) Center for Healthcare Technology & Development and Department of Organic Materials and Fiber Engineering, Chonbuk National University, Jeonju, 561-756, South Korea;(2) Polymer Fusion Research Center and Department of Polymer-Nano Science and Technology, Chonbuk National University, Jeonju, 561-756, South Korea;(3) Departments of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA |
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| Abstract: | Flexible mats of titania fibers are prepared by calcination of electrospun polyvinylpyrrolidone fibers containing titanium
isopropoxide precursor. Structural investigation of the calcinated nanofibers by X-ray diffraction (XRD) and electron diffraction
(ED) combined with the morphologies by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show
the titania fibers, with an average diameter of 180 nm, were comprised of anatase and rutile crystals. The mechanical, chemical
and thermal properties of the titania fiber mats are further investigated by the techniques of Instron mechanical tester,
thermogravimetric analyzer (TGA), and Fourier transform infrared spectroscopy (FT-IR). The titania fiber mat prepared in this
method exhibited a significant flexibility with 461 MPa Young’s modulus. |
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