Blends aus polyvinylchlorid und chloriertem polyäthylen. III. Untersuchungen von dynamischen eigenschaften,schlagzähigkeit,transparenz und fließverhalten

The modul of the polymeric two phase system poly(vinylchloride)/chlorinated poly(ethylene) is dependent on manufacturing conditions during melt blending. We have compared experimentally determined moduls of these blends with calculated moduls according to the models of Davies and Nielsen. The calculated moduls are in agreement with morphological findings by electron microscopy. An interpenetrating network of the two phases or a sphere-in-matrix morphology is found dependent on concentration and on manufacturing conditions during melt blending. Optical properties of the modified PVC were determined by light scattering. Correlation of impact properties of these blends with morphological observations confirms the interpenctrating network structure as optimal to achieve good mechanical properties. This morphology has also the lower melt viscosity compared to the spherematrix-morphology. These rheological results are compared with the particle flow of PVC being demonstrated with two samples of emulsion PVC.