PREPARATION OF HYDRAULIC HARDENED BODY OF CALCIUM PHOSPHATES CONTAINING PHEMA

Abstract

The hydraulic hardened bodies were prepared from the thermal decomposition product of hydroxyapatite containing 2-hydroxyethyl methacrylate (HEMA). The hardened bodies were composed of calcium deficient hydroxyapatite, tetracalcium phosphate (TeCP) and polyhydroxyethyl methacrylate (PHEMA). By addition of a crosslinking agent (N,N¹-methylenebisacrylamide) the flexural strength of the hardened bodies containing PHEMA became a little higher than that of the hardened bodies without additives. It seems that appropriate crosslinking strengthened the polymer added, then the increase of polymer strength leaded to increasing the flexural strength of the hardened bodies with additives.