Figure 1
(a) Shear storage modulus \(G^{\prime } = E^{\prime }/3 \) (solid circles) and shear loss modulus \(G^{\prime \prime } = E^{\prime \prime }/3 \) (open circles) vs. frequency f. The symbols are taken from the respective master curves in Fig. 8d of Ref.25 obtained at a reference temperature of 70 °C and with a shear strain amplitude of 0.2% . The solid lines are drawn using Eq. (16) with \(E_1^{\prime }=600\) MPa, \(x_1^{\prime }= 0.25\), \(E_2^{\prime }=150\) MPa, \(x_2^{\prime }= 0.05\) and \(E_1^{\prime \prime }=240\) MPa, \(x_1^{\prime \prime }= 0.35\), \(E_2^{\prime \prime }=5.1\) MPa, \(x_2^{\prime \prime }= 0.025\) and \(t_g=2 \cdot 10^{-9}\) s. (b) \(\log _{10}a_T\) vs. temperature T. The symbols are taken from Fig. 7 of Ref.25. Here the solid line is a WLF fit with \(c_1=-4.41\), \(c_2=137,64\) \({}^o\)C and \(T_{\text{ ref }}=70\) \({}^o\)C.
