Novel double hybrid-type bone cements based on calcium phosphates, chitosan and citrus pectin

Abstract

Abstract In this work, the influence of the liquid phase composition on the physicochemical properties of double hybrid-type bone substitutes was investigated. The solid phase of obtained biomicroconcretes was composed of highly-reactive α-tricalcium phosphate powder (α-TCP) and hybrid hydroxyapatite/chitosan granules (HA/CTS). Various combinations of disodium phosphate (Na2HPO4) solution and citrus pectin gel were used as liquid phases. The novelty of this study is the development of double-hybrid materials with a dual setting system. The double hybrid phenomenon is due to the interactions between polycationic polymer (chitosan in hybrid granules) and polyanionic polymer (citrus pectin). The chemical and phase composition (FTIR, XRD), setting times (Gillmore Needles), injectability, mechanical strength, microstructure (SEM) and chemical stability in vitro were studied. It has been showed that the properties of materials can be controlled by using the appropriate ratio of citrus pectin in the liquid phase.