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An experimental study of the dipole moment of poly(dimethylsiloxane)

Küçükyavuz, Z
The mean-square dipole moments of poly(dimethylsiloxane) chains have been determined from dielectric constant measurements on dilute solutions of the polymer in toluene and carbon tetrachloride at temperatures in the range 10–60°C. The temperature coefficient of the dipole moment ratio in toluene was found to be positive, qualitatively in agreement with the prediction of rotational isomeric state theory. The values of the mean-square dipole moment in carbon tetrachloride are higher than in toluene indicating the existence of a specific solvent effect.