Neutral component localization in the volume of photopolymerizable medium by the counter moving boundaries of initiating radiation action

The diffusion processes of concentration heterogeneities formation in a photopolymerizable composition with a neutral component during its curing by the non-stationary flow of light are studied. It is established experimentally and by computer simulation that the local concentration of the neutral component can be effectively changed in the regions of tens – hundreds microns during the opposite movement of the boundaries of the radiation action initiating the polymerization along the layer of the polymerizing medium. The optimal conditions of realization of such processes are determined. The process of the neutral component displacement to the shady area is shown to be controlled by the velocity of the illuminated area boundaries movement. The optical design of porous polymeric materials is experimentally performed by the photopolymerization of oligoetheracrylates.