Abstract
The morphology of polypropylene (PP)/polyamide 66 (PA66) blend at an asymmetric composition is tailored by organoclay and maleic anhydride grafted polypropylene (MAPP). Without MAPP, a transition from typical sea-island morphology to coarse co-continuous morphology is observed when organoclay loading relative to PA66 phase reaches 10wt%. With 10wt% of organoclay, the coarse co-continuous morphology is transformed to fine fibrillar and then to rod-like morphology with increasing MAPP contents. The morphological changes are well interpreted from the view of morphology evolution process. Finally, an attempt was made to correlate the melt dynamic rheological response of all samples with corresponding morphology.
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