Dielectric constant of PVDF/MgO nanocomposites thin films

• Published in: 2012 IEEE Symposium on Business, Engineering and Industrial Applications pp. 18 - 22
• Main Authors: Rozana, M. D., Arshad, A. N., Wahid, M. H., Habibah, Z., Ismail, L. N., Sarip, M. N., Rusop, M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.09.2012
• Subjects: Dielectric constant; Dielectric losses; FESEM; FTIR; Loading; MgO; nanocomposite; Nanocomposites; Polymers; PVDF
• ISBN: 9781457716324; 1457716321
• DOI: 10.1109/ISBEIA.2012.6422866

This study investigates the effect of varying loading percentage of MgO on the dielectric constant of Poly (vinylideneflouride)/Magnesium Oxide (PVDF/MgO) nanocomposite thin films. PVDF/MgO nanocomposite spin coated thin films were successfully fabricated and characterized. PVDF and nanocomposites solutions with loading percentage of MgO at 3, 5, 7, 9, and 11% were spin coated on Al-glass substrates at 1500rpm. The optimum percentage of PVDF/MgO thin film obtained from the dielectric measurement was 7%. The dielectric constant of PVDF/Mg(7%) nanocomposite at frequency 10 3 Hz was 21, with low dielectric loss and absence of visible film defects, as evident by FE-SEM images. In FTIR, broad bonding peaks at 840 and 880 cm -1 can be observed. Both bonding represented the -CH 2 and -CF 2 groups of PVDF, which indicated high β-phase content that attributed to the increment in the dielectric constant of PVDF/MgO(7%) nanocomposite. The PVDF/MgO(7%) nanocomposite is favorable for low frequency electronic application such as capacitor.