Molecular View of Plastic Deformation and Precursor Processes of Crazing inGlassy Polypropylene and Polycarbonate

摘要

The kinematics and energetics of the an elastic processes of phenylene ringrotation and carbonate group rearrangements in polycarbonate, and the nature of coherent plastic relaxations under imposed conditions of pure shear to large plastic strains in polypropylene have been computationally simulated on computer generated molecular structure models of these polymers in glassy form. In addition, simulations have also been performed on the inelastic dilatational response of polypropylene to probe precursor processes to crazing. Results on these simulations will be presented.