FACTORS DETERMINING THE ELASTIC-MODULUS O F POLYAMIDE NETWORKS

The reasons that may cause a decrease in the elastic modulus of polyam ide networks have been studied by methods of computer simulation. It i s shown that torsional rotation about virtual bonds in the segments do es not affect the elasticity of the network. A significant effect on t he elasticity is produced by defects that appear when one of the three functionalities of the branching reagent does not participate in the reaction. Even an insignificant amount of such defects may noticeably modify the physical properties of the network.