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Dielectric Constants of Irradiated and Carbonated Polymers
Abstract
Using the LC resonance circuit, changes in dielectric constants of irradiated and carbonated polymers as a function of carbon concentration are investigated. Both low and high density polymers are used. Results predict a quadratic increase in the dielectric constant of specimen as the percentage concentration of carbon is increased. This may be due to the formation of some polar groups which not only get polarized due to relative displacement of electrons and protons, but also have an inherent significant dipole lengths. Results also show that irradiation cases increase in the dielectric constant of both pure and carbonated polymers and that for a given composition, the dielectric constant increases with frequency. Irradiation effect is more pronounced for high density polymers than for low density polymers, and tends to disappear as carbon concentration increases.
