Studies on the Stress Relaxation of Polystyrenes in the Rubbery-Flow Region. II.
PRINCETON UNIV N J FRICK CHEMICAL LAB
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An empirical equation for stress relaxation in the rubbery-flow region was applied to broad- and narrow-distribution polystyrenes. It is shown that over the range of polydispersity and molecular weights tested, the shear viscosity eta state near compliance Je, and the rubbery-flow stress relaxation may be predicted if Mn and Mw are known. Author