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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.123  No.1437 (May) (2015)  >  pp.312-316

Journal of the Ceramic Society of Japan
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Electrospinning of ferroelectric (Na,K)NbO3 fiber through citrate precursor route

Minato KATO1), Ken-ichi KAKIMOTO1)
1) Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology

Ferroelectric ceramic fiber is expected to demonstrate a wide variety of practical applications in industrial fields due to the flexibility and shape anisotropy. Lead-free ferroelectric (Na,K)NbO3 (NKN) fiber was synthesized through electrospinning method using aqueous-based citrate precursor (CP). The morphology of electrospun fibers was observed and the properties of the precursor solution, such as viscosity, electrical conductivity and evaporation rate, were investigated. Addition of ethanol and acetic acid to the solvent of the PVA solution worked well for the electrospinning since both additives could control the electrical conductivity as well as evaporation rate of the CP/PVA prepared solution. The properties of the precursor, especially electrical conductivity and evaporation rate have significant influence on the morphology and homogeneity of the developed fibers. The homogeneous NKN fibers with a single perovskite structure of orthorhombic phase at room temperature and controllable diameter ranging approximately 100 to 1100 nm were obtained, indicating that the electrospinning of ferroelectric NKN fiber through CP route was successfully conducted.

Lead-free piezoelectric material, Citrate precursor, Electrospinning, Ceramic fiber, Non-woven fabric

Received: November 28, 2014
Accepted: December 29, 2014 , Published online: May 01, 2015



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