Abstract
In this study, the effect of the loading of CaCO3 particles (mean particle sizes of 0.6, 0.9 and 2.0 mm) on the mechanical properties of poly(vinyl chloride)(PVC)-chlorinated polyethylene (CPE) blend was investigated. The CaCO3 particles were modified with stearic acid preliminary. The composites were prepared using mixing roll. As results, the impact strength of PVC/CPE/CaCO3 system increased dramatically when the CaCO3 particle size 0.9 mm or below and both CPE and CaC03 contents were within the particular range. No significant increase of the impact strength was observed in the system with the 2.0 mm of CaC03 particles. From the transmission electron microscopic observation, the CPE particles ranging in size from 0.1 to 0.3 mm were dispersed in the matrix, and superior impact strength was observed in the distance between CPE and CaCO3 particles below 0.2 mm. And the strong interaction between CPE and CaC03 particles was confirmed by the dynamic mechanical analysis.
