Abstract:SUMMARYViscoelastic parameters of polystyrene (PS) melt in compression creep have been measured in an Instron capillary-rheometer.Bulk compression creep compliance B(t) shows plateau regions in the molten state (B,) and the glassy state (BJ, both decreasing with increasing stress. Shifting of B(t) curves provides master curves suitable to analysing the total (superposed elastic and viscous deformations) bulk compression behaviour. The steady-state creep compliance (BS) allows to describe the recoverable elasti… Show more
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