The temperature dependence of the equilibrium and instantaneous compliances of low molecular weight polystyrene melts

The equilibrium compliance of three low molecular weight polystyrene melts has been determined over the range 15–70°K above T_g from dynamic viscoelastic measurements using alternating shear. Results are favorably compared with the previous results of Plazek and O'Rourke obtained from creep measurements, but agreement with predictions based on the Rouse theory is obtained only in the case of the highest molecular weight sample.