Synthesis of Calcium Phosphate/Gypsum Composite Powders

Abstract

Gypsum powders and calcium phosphate/gypsum powders were synthesized by wet method. The influences of the pH and temperature on the morphology of the gypsum crystal were studied by light microscopy. The effects of the initial calcium/phosphorus molar ratio and the pH of the solution on the microstructure and phase composition of the calcium phosphate/gypsum composite powders were studied by scanning electron microscopy and X-ray diffractometry. The results show that both temperature and pH value had influence on the crystal shape of gypsum and the pH value was the predominant parameter for the particle shape and phase composition of the composite powders.

Structure and Properties of Bioactive Glass-Modified Calcium Phosphate/Calcium Sulfate Biphasic Porous Self-Curing Bone Repair Materials and Preliminary Research on Their Osteogenic Effect

“…Meanwhile, the communication structure between pores can promote the migration of bone cells and the exchange of nutrients [20]. At the same time, the phagocytosis of cells in vivo will accelerate the degradation of the composite materials, and the released calcium ions and phosphate ions, which can activate platelets to release bone morphogenetic proteins and plateletderived growth factors that stimulate the proliferation and osteogenic differentiation of mesenchymal stem cells, such that the composite materials are gradually replaced by bone tissue [21].…”