Effect of electric field on light scattering of solutions of polar chain polymers

Abstract

AbstractThe effect of strong uniform electric field on the statistical configuration and the light scattering of linear chain polymers in solutions is studied. The statistical configuration of linear chain molecules is affected by the mutual interactions between the dipoles attached to the segments of the molecules and the external electric field. The radial distribution function of molecular segments from arbitrary chosen segment and that around the center of gravity of the molecule are calculated. The distribution functions are not spherically symmetric, and show that the molecules are slightly stretched toward the applied electric field. Using the radial distribution function calculated, we calculated the angular distribution of the intensity of scattered light by the deformed chain molecules. The intensity of scattered light is dependent on the magnitude of the applied electric field and the relative orientation of the incident ray, scattered ray, and electric field. Several special cases are illustrated. The effect of electric field is most conspicuous when the incident ray is parallel to the electric field and the scattered angle is 180°. We observed the effect of electric field on the light scattering of polyvinyl chloride molecules in diethylene oxide at the field intensity of 3000 v./cm. and the concentration 1%.