Preparation and Properties of Poly（Ethylene Terephthalate）/Boehmite Nanocomposite

Colloidal boehmite particles have been included into a polyethylene terephthalate matrix by in situ polymerization. Boehmite nanoparticles were produced by the controlled hydrolysis of aluminium isopropylate. The nanoparticles were characterized using Transmitted Electronic Microscopy （TEM） and X-ray Diffraction （XRD）, which revealed the particles of magnitude about 10 nm. The particles have been used without any surface modification. Characterization of the nanocomposite has been carried out using TEM and differential scanning calorimetry （DSC）. TEM images indicate that the particles have been homogeneously dispersed in the polymer. DSC results show that the presence of boehmite affects the process of crystallization of polyethylene terephthalate.