Studies on the effect of hard segment cross-linking on the polyurethane properties

Abstract

The studies focus on the preparation of the polyurethane sheets. Polyurethanes belong to the polymers that have the wide spectrum of applications. The polyurethane based materials are getting worldwide attention and demand, due to their superior properties over the other materials available. The pure polyurethane as well as cross linked polyurethane sheets was prepared using the polymerization process. The prepared polyurethanes were characterized by scanning electron microscopy (SEM), Fourier transformation infrared (FTIR) spectroscopy and thermo gravimetric analysis TGA-DTG analysis. The compositional and structural studies indicate the formation of polyurethane linkages. Also the thermal stability is indicated by the TGA analysis. The SEM image provides the morphological studies for the polyurethane samples.