Structure and properties of epoxide-amine molecular networks☆

Abstract Mechanical testing and photo-elasticity have been used to study the epoxideamine molecular networks representing the product of the interaction of the diglicidyl ether of resorcinol with metaphenylenediamine and aniline. The temperatures of the α transitions have been determined as a function of the average network molecular weight M c . It is shown that the networks studied represent the superposing of structures with both positive and negative values of differences in their main polarizibilities. The thermodynamic rigidity of the molecular chains of the branches of the network is evaluated. It is shown that fall in the half-with of the α-process with rise in M c is apparently associated with decline in the relative role of the small scale relaxation mechanisms.