Dynamic properties of low and moderate molecular weight polystyrenes at infinite dilution

Oscillatory flow birefringence (OFB) has been used to determine the dilute solution and infinite dilution conformational dynamics properties of low molecular weight polystyrenes (PS) in Aroclor 1248. These results are well-described by the bead-spring model (BSM) of Rouse and Zimm. Pulsed-field-gradient NMR and forced Rayleigh scattering have been used to determine the infinite dilution diffusion coefficients for five PS samples in the same solvent. These results are well-represented by the Kirkwood-Riseman expression. The OFB and diffusivity results have been combined with other literature data for PS in Aroclor 1248 to provide a stringent test of the BSM