Fabrication of a novel bone adhesive (crosslinked phytic acid-gelatin coordinated with magnesium phosphate and calcined dolomite, and montmorillonite) for enhancing adhesion strength and biocompatibility

Bone adhesives are known as a promising fracture treatment material because they can quickly heal broken bones. However, the existing bone adhesives have the disadvantages of weak binding ability to bone tissue, non-absorption, or difficulty in curing under wet conditions, which limits their wide application in the field of bone tissue engineering. In this study, the raw material of magnesium phosphate bone adhesive was modified, and the composite material of magnesium phosphate bone repair was prepared by the method of solid–liquid blending crosslinking. Mineral-organic composite, a new type of bone adhesive was prepared using calcined dolomite and montmorillonite as mineral components, phytic acid and gelatin as organic components. The compressive strength, porosity and bonding strength of the magnesium phosphate-based bone adhesive were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. When the dosage of dolomite is 8 wt