Structure and mechanical properties of iPP/sPP/mica blends

The influence of the size of mica and different processing methods on the mechanical properties of isotactic polypropylene (iPP)/syndiotactic polypropylene (sPP)/mica blends was studied. The results show that (1) the yield strength of iPP/sPP/mica blends is improved by mica, and crosslinked sPP has slight influence in the blends; (2) the impact strength of iPP/sPP/mica blends is also improved by mica. The smaller size of mica introduced into blends, the better impact strength of blends is obtained; (3) differential scanning calorimetry (DSC) results show that as the existence of mica the melting temperature and the crystallization temperature of iPP component increase; (4) the results of scanning electron microscope (SEM) show that the mica is located in iPP phase, however, the location of the smaller mica is even.

Duke Scholars

Author Tan Zhang DKU Faculty