BIODEGRADABLE POROUS COMPOSITES BASED ON POLYHYDROXYBUTYRATE FOR BIOMEDICINE AND BIOENGINEERING

Abstract

Porous osteoplastic composites using polyhydroxybutyrate as a binder and hydroxyapatite (HA) as a reinforcing component were obtained by press molding. To evaluate the effect of HA particles on the structure and properties of the composites, the amount of filler was varied from 0 to 50 wt%. %. It was found that the addition of HA to the polymer matrix causes a decrease in the mechanical strength of the resulting composites due to the formation of discontinuities in the matrix caused by poor interaction between the matrix and filler particles. An increase in the amount of HA contributed to the formation of a porous composite similar to bone tissue, thereby enhancing its bioactivity.