Effect of Nano-Ce-Doped TiO2 on AC Conductivity and DC Conductivity Modeling Studies of Poly (n-Butyl Methacrylate)
| Autor: | M. T. Ramesan, K. Suhailath |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Polymer nanocomposite Direct current Nanoparticle 02 engineering and technology Activation energy Conductivity 021001 nanoscience & nanotechnology Condensed Matter Physics Thermal conduction 01 natural sciences Electronic Optical and Magnetic Materials Electrical resistivity and conductivity 0103 physical sciences Materials Chemistry Electrical and Electronic Engineering Composite material 0210 nano-technology |
| Zdroj: | Journal of Electronic Materials. 47:6484-6493 |
| ISSN: | 1543-186X 0361-5235 |
| Popis: | Among the unique properties of polymer nanocomposites, electrical conductivity deserves a prominent place due to their wide applications in conducting adhesive, electromagnetic shielding and sensors. The present work focuses on the effect of cerium-doped titanium dioxide (Ce-TiO2) nanoparticles on the conductivity studies of poly (n-butyl methacrylate), or PBMA, nanocomposites at different temperatures. The frequency-dependent alternating current (AC) electrical conductivity of PBMA/Ce-TiO2 nanocomposites has been found to increase with increase in temperature and the concentration of Ce-TiO2 nanoparticles. The activation energy calculated from the AC electrical conductivity has been found to decrease with frequency and increasing temperatures. The frequency exponent factor also showed a decrease with frequency, indicating the hopping conduction in the nanocomposites. The maximum AC conductivity has been observed for the composites with 7 wt.% sample. The direct current (DC) conductivity of PBMA/Ce-TiO2 composites was also enhanced with the addition of Ce-TiO2 nanoparticles. Experimental and theoretical investigations based on Scarisbrick, Bueche, McCullough and Mamunya modeling were undertaken to understand the observed DC conductivity differences induced by the addition of Ce-doped TiO2 nanoparticles to PBMA matrix. The experimental conductivity showed good agreement with the theoretical conductivity observed using the Mamunya model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink