Abstract
Abstract Dielectric normal mode process due to the fluctuation of end-to-end vector of chain molecules is studied on solutions of cis-polyisoprene over a wide range of concentration from infinite dilution to the bulk state. It is found that with increasing concentration and molecular weight, the relaxation time for the normal mode process increases on account of entanglement. We compare the experimental results with the Rouse-Zimm theory and the dynamic scaling law proposed by de Gennes.
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