Some of the dielectric properties of irradiated cotton fibers

ABSTRACT

The effect of gamma-radiation on the dielectric constant, epsilon ['], and the dielectric loss, epsilon [']for cotton fibres is studied. The dielectric measurements are carried out over the frequency band 0.2 to 10 Me./Sec. and at several temperatures between -10 to 85 degree. The results indicate that both epsilon['] and epsilon["] increase with increasing gamma-doses.. This increase is attributed to the degradation of cellulose chain by gamma radiation. A dielectric loss peak is observed at high temperature and specify gamma-doses of irradiation which is attributed to the formation of carbonyl groups by oxidation