structure-properties comparison of random and block hydroxyl terminated polyether copolymer (htpe and tpeg)

In this paper, a brief review was made on the difference in microstructure and properties of two hydroxy terminated polyether copolymers. these two types of polyether copolymer (htpe and tpeg) are used as binders in the formulation of high-filled composites. using proton and carbon nuclear magnetic resonance (1h and 13c nmr) and fourier transform infrared spectrometer (ft-ir) tests, the microstructure of tpeg and htpe has been determined as block and random; respectively. the general properties of the copolymer are close to each other. the differences in molecular structure (stereo-regularity) is a main difference between the two colpoymers. the difference between the properties of tpeg and htpe is that tpeg does not have microcrystallization and also has a higher viscosity, glass transition temperature (tg) and melting point compared to htpe.