STUDY OF THE CaCO_3 FILLED PP/HDPE COMPOSITES USING DIFFERENT SURFACE MODIFIERS

摘要

This article describes the surface modification of CaCO_3 filler with three titanate and one zirconate coupling agents and its effects on the properties of the PP/HDPE blends. CaCO_3 was coated with these coupling agents of varying concentration (0.3-1 wt. %). The best performance in terms of tensile modulus was observed in blends having 0.7% titanate coupling agent (LICA 12). SEM microgrhaps indicated better dispersion and decreased agglomeration of the smaller CaCO_3 particles.