Abstract
Measurements of the dielectric constant of cotton cellulose, mercerized cellulose acetate, methyl cellulose, and carboxymethyl cellulose have been carried out in the temperature range of 0–70°C at different frequencies. The results showed that the values of the dielectric constant, with all cellulose derivatives at a given frequency, are greater than that of cotton cellulose and lower than that of mercerized cellulose. The variation of the dielectric constant with temperature showed a transition at 30–40°C with all the samples studied. These results, together with those from infrared spectra and specific volume measurements, indicated that the dielectric behavior depends greatly on the nature of the side group, the degree of hydrogen bonding between the different chains, and the micropores present in the fiber.
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