Abstract
Depolarized Rayleigh spectra of low molecular weight polystyrene samples in dilute solution in bicyclohexyl, a θ-solvent at 61°C, were obtained. The spectra fit well to single Lorentzian line shapes which were assigned to the overall reorientation motion of the highly anisotropic polymer. The relaxation times at different molecular weights scale with the Stokes-Einstein-Debye equation. The obtained hydrodynamic volumes reduced to a simple monomer unit, show a maximum at w ≃ 2000, apparently reflecting increasing coiling with increasing chain length
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