Biomimetic Synthesis Of A Novel Ha/corncob Composite

摘要

To mimic the unique hierarchical structures of natural bone tissue, a novel hydroxyapatite (HA) composite coming from cormcob was synthesized by biomimetic method. Corncob, a natural porous material, was modified by phosphorylation with NaOH-H_3PO_4 methods. Subsequently, the phosphory-lated samples were immersed in saturated Ca(OH)_2 solution to be pre-calcified for 4 days, and then in a simulated body fluid (SBF) to be mineralized for 21 days. The results showed that bone-like apatite crystals formed both on the surface and inside the pores of the phosphorylated corncob. The apatite-corncob composite characterized with a hierarchical structure, and it is expected to be useful as a natural porous bioactive bone-repairing material.