Styrene crosslinked vinylesters. I: Correlation between the theoretical structure and some thermophysical properties
Six di- or tetramethacrylates based on respectively bisphenol A diepoxides or phenol-epoxynovolacs were crosslinked by styrene in optimized conditions. Density, T g , propagation rates of ultrasonic waves, tensile properties and rubbery modulus were then experimentally determined. A constitutive repeat unit of the network was written on the basis of the hypothesis that the conversion of the styrene-methacrylate copolymerization was complete and that the resulting network was homogeneous. The relationships between the corresponding (theoretical) structure and the physical properties were then studied