Abstract
Depolarized photon correlation spectroscopy (PCS) was applied to investigate polystyrene near the glass transition temperature. The photon correlation function is well described by a single Kohlrausch–Williams–Watts (KWW) function, in which distribution parameters, b, is around 0.34—0.38 which is consistent with the literature results for glass transition. In order to determine the relaxation behavior of polystyrene its depolarized photon correlation function was compared with that from the shear stress relaxation modulus. It appears that relaxation behaviour obtained from depolarized photon correlation spectrum studies is very similar to that of the glass-rubber transition zone in the shear stress relaxation modulus.
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Lin, H., Chen, Y. & Yu, T. Depolarized Photon Correlation Spectroscopy and Shear Stress Relaxation Modulus of Polystyrene. Polym J 26, 431–438 (1994). https://doi.org/10.1295/polymj.26.431
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DOI: https://doi.org/10.1295/polymj.26.431