Effect of Curing Conditions and BaTiO3 Nanoparticle Addition on Dielectric Constant of PDMS for EAP Applications |
| B.S. Akdemira, b, I.M. Kusoglub, c
aGebze Technical University, Department of Nanoscience and Nanoengineering, Kocaeli, Turkey bDokuz Eylul University, Department of Nanoscience and Nanoengineering, İzmir, Turkey cDuisburg-Essen Universität, Technical Chemistry I, Duisburg, Germany |
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| To a great extent, dielectric properties of electroactive polymers affect actuator efficiency. In this study, we examined the effect of BaTiO3 nanoparticles addition on dielectric constant of a PDMS nanocomposite. We optimized the curing conditions of PDMS for the highest dielectric constant. After that, we added several amounts of BaTiO3 nanoparticles (0.5-30 wt%) to PDMS. Dielectric constants of the samples were calculated by measuring capacitance values by an LCR meter at 10 kHz. The highest dielectric constant (5.09×10-25) belonged to the PDMS which was cured at 100° for 35 min. Structural properties of PDMS and BaTiO3 nanoparticles were determined by the Fourier transform infrared spectroscopy, differential thermal analysis, X-ray diffraction and scanning electron microscopy. |
DOI:10.12693/APhysPolA.139.145 topics: electroactive polymer composite, piezoelectric nanoparticle, BaTiO3, PDMS |