Abstract
The structural characterization of thermoplastic elastomeric blends of polyamide-6 and acrylate rubber (ACM) has been carried out by wide angle X-ray diffraction analysis (WAXD) and by differential scanning calorimetry (DSC). WAXD results suggest a reduction in the crystallite size as well as an increase in the unit cell dimensions of polyamide-6 crystals in the presence of ACM. DSC results showed a drop in both Tm and the crystallinity of the polyamide-6 phase with the addition of rubber in the blends. The Tg of ACM in the blends was higher than that of pure ACM homopolymer. The elevation of Tg of ACM, coupled with the depression of Tm of polyamide-6, indicates the kinetic restriction of the crystallization process of polyamide-6 in the blends, which is ascribed to the grafting of ACM chains onto the polyamide-6 matrix during the melt blending operation.
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