Calorimetric and X-ray investigations of polyamide-6 and blends with a polyethyl acrylate elastomer Part III: Crystallization-, melting- and brill-transition behaviour of polyamide-6

In PA-6/PEA-blends the crystallization potential of PA-6 is reduced by reac tions leading to either longer or crosslinked chains. Depending on the mech anical pre-treatment, blends with less than 40 wt-% PA-6 crystallize in 2 o r 3 steps. For the system PA-6/PEA (W(PA-6) = 0.2) it has been shown that a multi-step crystallization does only occur if and when the mixing process has been long enough. The DSC results show that in blends with up to 60 wt- % PEA the PEA is dispersed into a matrix formed by PA-6. The Brill-transiti on of polyamide in PA-6/PEA (W(PA-6)= 0.2) has been studied using dynamic w ide-angle X-ray experiments.