Hyperbranched Aliphatic Polyester Grafted Calcium Carbonate Nanoparticles with a Real One‐Pot Method

The hyperbranched aliphatic polyester grafted calcium carbonate nanoparticles (HAPE‐CaCO₃), was successfully prepared by the real one‐pot method. The AB₂ monomer, 2,2‐bis(hydroxymethyl)propionic acid (bis‐MPA), was used as both the surface modifying agent and the monomer of the hyperbranched aliphatic polyester. It introduced the organic active group (hydroxyl group) onto the surfaces of the calcium carbonate nanoparticles (nano‐CaCO₃) and its polycondensation took place subsequently, with the catalysis of p‐toluenesulfonic acid (p‐TSA). The HAPE‐CaCO₃ had been characterized by elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analysis (TGA), and transmission electron microscope (TEM).

Keywords:

• Hyperbranched aliphatic polyester
• calcium carbonate nanoparticles
• real one‐pot method
• grafting from

This work was supported by the Natural Science Foundation of Gansu Province (3ZS041‐A25‐002) and the Interdisciplinary Innovation Research Fund For Young Scholars, Lanzhou University (LZU200302).