The thermal behaviour and the resulting potential changes within the polymer:IND extrudates were also investigated by melt rheology (Figure ). The value for G'' (loss modulus) is constant at 250 Pa for the neat polymer sample during the whole measurement and at 190 Pa for the polymer:IND extrudate. A slightly different behaviour can be observed for G' (storage modulus). During heating, a moderate but continuous increase in G' is visible.