Abstract
The dielectric relaxation of dilute and semidilute polyisoprene solutions in a moderately good solvent was investigated. The concentration dependences of both the terminal relaxation time and the dielectric spectrum exhibit universality over a wide range of molecular weights. The terminal relaxation time in the limit of infinite dilution scales with [η]M and is consistent with partially draining Rouse-Zimm behavior. Terminal times are exponential in concentration τ 1 /τ 1 0 = e cA , where the concentration scaling parameter A has a somewhat different molecular weight dependence than intrinsic viscosity
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