HYPERBRANCHED ALIPHATIC POLYESTER GRAFTED SILICA NANOPARTICLES BY A FACILE ONE-POT METHOD

Hyperbranched aliphatic polyester grafted silica nanoparticles (HAPE-SNs) have been prepared via the polycondensation of a AB2 monomer, 2, 2-bis(hydroxymethyl)propionic acid (bis-MPA) from the surface of the aminopropyl silica nanoparticles (APSNs) by a facile one-pot method catalyzed with p-toluenesulfonic acid (p-TSA). The product, HAPE-SN, is characterized by elemental analysis (EA), Fourier transform infrared (FTIR) spectroscopy analysis and thermogravimetric analysis (TGA). The transmission electron microscopy (TEM) result shows that the HAPE-SNs have better dispersibility in organic solvent.