Topology of concentration-gradient transition zones in polymer adhesive compounds

This work provides an overview of data on the topology of concentration-gradient transition zones forming in polymer adhesive compounds with different thermodynamic compatibilities of components and phase states of the system. It is shown that the structural organization of a transition zone involving an existence and extension of areas of diffusional mixing, nature, and dimensions of phase aggregates depends heavily on the thermal prehistory and formation conditions and usages of compounds and can be determined by the phase equilibrium diagrams for an adhesive–substrate system.