Reabsorption of free radicals

Desorption and Reabsorption of Free Radicals in Emulsion Polymerization ... 

It should be noted that the rate of absorption of free radicals by the latex particles from the continuous aqueous phase (p or a ) is not equal to the rate of generation of free radicals in the continuous aqueous phase (p, or a) when desorption of free radicals out of the latex particles (m) and/or the bimolecular termination of free radicals in the continuous aqueous phase (Y) cannot be neglected in the emulsion polymerization system. In addition to the particle nucleation mechanisms discussed in Chapter 3, to gain a fundamental understanding of transport of free radicals in the heterogeneous reaction system (e.g., absorption of free radicals by the latex particles, desorption of free radicals out of the latex particles and reabsorption of the desorbed free radicals by the latex particles) is thus required to predict the emulsion polymerization... 

Reabsorption of the desorbed free radicals by the latex particles may contribute to the emulsion polymerization kinetics, as proposed by Ugelstad and Hansen [19], According to Gilbert [55], the overall rate of absorption of free radicals by the latex particles (pa) can be written as... 

Ugelstad et al. [8,9] then incorporated the kinetic events of the bimolecular termination reaction taking place in the continuous aqueous phase and reabsorption of the desorbed free radicals by the latex particles into the O Toole model, and the mass balance equation for free radicals in the continuous aqueous phase can be expressed as... 

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