Effect of using different precursors on electrospinning of CaCu3Ti4O12 |
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| Affiliation: | 1. School of Engineering, Tarbiat Modares University, Tehran, Iran;2. Laboratory of High Performance Ceramics, Swiss Federal Laboratories for Materials Science & Technology (Empa), Duebendorf 8600, Switzerland;1. Empa, Swiss Federal Laboratories for Materials Science & Technology, 8600, Dübendorf, Switzerland;2. Electroceramic Department, Instituto de Cerámica y Vidrio, CSIC, Kelsen 5, 28049 Madrid, Spain;1. Departament d''Enginyeria Química, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/ d’Eduard Maristany 10-14, Edifici I2, 08019 Barcelona, Spain;2. Sicame Company, C/ Zinc 14 – Polígono Industrial Aquiberia, 08755 Castellbisbal, Spain;3. Department of Physics, School of Natural Sciences, University of Patras, 26504 Patras, Greece;4. Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, Greece;5. Departament d’Enginyeria Elèctrica, Universitat Politècnica de Catalunya, C/ Colom 1, 08222 Terrassa, Spain;6. Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya, Campus Diagonal Besòs (EEBE), C/ d’Eduard Maristany 10-14, Edifici IS, 08019 Barcelona, Spain;1. Department of Polymer Engineering & Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran;2. New Technologies Research Center (NTRC), Amirkabir University of Technology, 15875-4413, Tehran, Iran;3. Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran;1. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, China;2. Department of Materials Engineering, The University of British Columbia, Vancouver V6T 1Z4, Canada |
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| Abstract: | In this study, the rheological behavior of electrospinning solutions containing different copper and calcium salts (Cu(NO3)2·3H2O, CuCl2, Ca(NO3)2·4H2O and CaCl2) were investigated. To find out the suitable electrospinning solution for producing the high purity CaCu3Ti4O12 nanofibers, solutions containing different copper and calcium salts were prepared and CaCu3Ti4O12 fibers with different morphological and size were produced. The results showed that the nature of the metals complexes in the ceramic solutions had an obvious effect on the rheological behavior of the electrospinning solutions. FTIR spectras of the electrospinning solutions demonstrated that the interaction between the metal ions and carbonyl groups in the polyvinylpyrrolidone unit occurred and the polyvinylpyrrolidone chains underwent conformational variations. Intensity of the interaction between the metal ions and polymer chains in chloride salts solutions is more than nitrate salts solutions in order to the viscosities of chloride solutions that are more than nitrate solutions. So, thinner high purity polycrystalline CaCu3Ti4O12 nanofibers with diameters ranging <200 nm were successfully synthesized by selecting a novel solution containing copper and calcium nitrates after sintering at 900 °C for 4 h. |
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| Keywords: | Electrospinning Nanofiber Polyvinylpyrrolidone Sol–gel |
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