Figures and show the results of the temperature sweep experiment in terms of the storage modulus -E' (Fig. ) and the damping factor -tanδ (Fig. ) as a function of temperature. The curves of E'(T) and tanδ(T) are very similar for all materials. In the temperature range of -60 ºC -30 ºC, a clear decrease in the value of the storage modulus is observed, indicating the glass transition of the polymer. This is also indicated by the appearance of a distinct peak in Figure . Table summarises the values of the glass transition temperatures determined as the temperature corresponding to the maximum position of this peak. They are significantly higher than those obtained by DSC (Table ) and range from -26.3 to 29.0 ºC. This difference is mainly due to the size of the samples. In the case of DMTA, although the heating rate is much lower than in DSC, the large dimensions of the samples mean that the heat penetrates the sample for a much longer time, which results in a delay in the change in the mechanical properties of the material. After the glass transition, a further decrease in the storage modulus is seen with a parallel increase in tanδ. This indicates an increase in the value of the loss modulus E'', and thus an increased ratio of viscous properties to elastic properties of the material. The results obtained correlate well with the DSC results. A wide range of the melting effect translates into a rapid loss of the elastic properties of the material just above room temperature. Another correlation is the lack of obvious changes in the course of the curves and only cosmetic differences in the characteristics of the phase transitions.