Effect Alkaline Additive to Polyester-based Composite for Biomedical Applications

A composite material was prepared by adding K2CO3 particles (less than53 m in size) to 0.3-1.8 wt % unsaturated polyester resin. The maximum values of tensile strength, hardness, impact energy, and water absorption ( %) were 56.885 N/mm2 at 0.3 wt %, 86.4 Shore D at 1.5 wt %, 0.43 J at 0.9 wt %, and 0.9831 % at 15 wt % compared with neat values, i. e. , 37.4742 N/mm2, 84 Shore D, 0.33 J, and 0.263 %, respectively.