Single-step rapid microwave-assisted synthesis of polyacrylamide-calcium phosphate nanocomposites in aqueous solution

摘要

Organic-inorganic polyacrylamide-calcium phosphate (PAM-CP) nanocomposites with calcium phosphate (CP) nanoparticles homogeneously dispersed in the polymer matrix have been successfully synthesized using calcium salt, phosphate and acrylamide monomer in aqueous solution by a single-step microwave-assisted method. When the experiment is conducted in a basic medium, the CP phase obtained consists of hexagonal hydroxyapatite (HAP) nanorods, and HAP nanorods are homogeneously dispersed in the polyacrylamide (PAM) matrix. While the preparation is in a weak acidic medium, the amorphous calcium phosphate (ACP) nanoparticles are formed and dispersed in the PAM matrix. The reported method has advantages of being simple, rapid, low-cost, and environmentally friendly. The products are characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TG).