Abstract
In the second stage of emulsion polymerization the contribution of chain propagation in particles containing simultaneously two macroradicals to the total rate of the process is usually insignificant. The average concentration of free radicals in the latex particle in the second stage in the presence of chain transfer agents, particularly in the case of monomers that are chain transfer agents is definitely determined by the ratio of the rate of entry, into the particle, of free radicals emerging during initiation and the rate of exit of transfer radicals from it. The rate of exit of transfer radicals from the particle is inversely proportional to the particle radius, or is not a function of the radius, depending on whether chain propagation proceeds in the volume of a particle, or on its surface.
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