Published January 1, 2018
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Evaluation of Electrical Characteristics for PMMA-TiO2 Nanocomposites Used in Dentistry
Creators
- 1. Univ Politehn Bucuresti, Fac Appl Chem & Mat Sci, 1-5 Polizu Str, Bucharest 11061, Romania
- 2. Univ Med & Pharm Carol Davila, Fac Midwifery & Med Assisting FMAM, Dept Dent Tech, 8 Eroilor Sanitari Blvd, Bucharest 050474, Romania
Description
In this paper, it is studied the influence of TiO2 nanoparticles content (0.2-5% wt:wt) on the electrical conductivities and the dielectric constants of poly (methyl methacrylate) (PMMA) nanocomposites used for 3D printing in dentistry. The nanocomposites films, which have been obtained applying the casting method followed by UV exposure, were mounted in a four electrodes cell for the electrochemical a.c. impedance analysis. The experimental data showed that both the dielectric constant and the electrical conductivity increase with increasing amounts of nano-TiO2 in nanocomposites. However, the change in the electrical conductivity is not significant for less 1% nano-titania added.
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