Evolution of the elastic modulus at the interfaces of amorphous glassy polymers

The method of shear deformation of adhesive compounds based on high-molecular-mass glassy polymers is used for the pioneering analysis of changes in the elastic modulus as a function of contact time and temperature at the symmetric and asymmetric polymer-polymer interfaces. The kinetics of changes in the elastic modulus and strength of adhesive joints during shearing at a contact temperature below the actual glass-transition temperature of the polymer bulk is analyzed. The elastic modulus can be generally described in terms of the classical principle of the temperature-time analogy with respect to the conditions of the formation of adhesive joints. Molecular and thermoactivation mechanisms of the evolution of adhesive viscoelastic and strength characteristics are discussed.