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An apparatus for dynamical mechanic measurements was modified in order to allow broadband dielectric spectroscopy measurements (10mHz to 10MHz) on systems under shear stress. Shear oscillatory deformation was applied to different systems under conditions of controlled deformation amplitude, choosing different shear frequencies and amplitudes, including the range of the non-linear viscoelastic response...
The segmental dynamics of bisphenol-A-polycarbonate (BPA-PC) are studied as a function of temperature (in the range from 143 to 473K) and pressure (0.1–300MPa) within the frequency range from 3×10 −3 to 1×10 6 Hz using dielectric spectroscopy aiming at extracting the more relevant parameter associated with the liquid-to-glass transition. Rheological measurements are also made in the...
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