On the kinetics of styrene emulsion polymerization above CMC. II. Comparison with experimental results

Abstract

The results of a detailed mathematical model developed in part I of this series (J Polym Sci A: Polym Chem 2000, 38, 2201) are discussed and compared against experimental data. The model results, which were obtained without the coagulation of the particles being taken into account, are congruent with the experimental data of the evolution of the monomer conversion and the rate of polymerization. This suggests that if coagulative nucleation takes place above the critical micellar concentration, it is not significant. According to the model, micellar nucleation dominates over homogeneous nucleation, as expected. The results obtained suggest that the observed increment in the number of particles (N) in interval II, sometimes reported in the literature, might be apparent. This apparent increment of N might come from the limitations of detecting very small particles (radii < 10 nm), the population of which is very significant according to the model results (i.e., a bimodal particle‐size distribution is predicted). © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 2219–2231, 2000

Modelling of continuous low‐temperature emulsion co‐polymerization in 3D ‐printed reactor

“…With these mathematical models the polymerization rate, [24][25][26] the monomer conversion, [24][25][26][27][28][29] average molecular weight and molecular weight distribution, [26,30] particle number and size, and particle size distribution [26][27][28][29][31][32][33] can be predicted under different operating conditions. Similarly, the modelling of butyl acrylate emulsion polymerization has been studied, with models available for predicting the polymerization rate, [24][25][26]34] the monomer conversion, [7,[24][25][26][34][35][36][37][38][39] average molecular weight and molecular weight distribution, [7,26,34,38] particle number and size, and particle size distribution. [7,26,[35][36][37][38] In recent times, studies were published that consider the kinetics of butyl acrylate polymerization in single phase system both experimentally and from the modelling perspective.…”

“…With these mathematical models the polymerization rate, [ 24–26 ] the monomer conversion, [ 24–29 ] average molecular weight and molecular weight distribution, [ 26,30 ] particle number and size, and particle size distribution [ 26–29,31–33 ] can be predicted under different operating conditions. Similarly, the modelling of butyl acrylate emulsion polymerization has been studied, with models available for predicting the polymerization rate, [ 24–26,34 ] the monomer conversion, [ 7,24–26,34–39 ] average molecular weight and molecular weight distribution, [ 7,26,34,38 ] particle number and size, and particle size distribution. [ 7,26,35–38 ] In recent times, studies were published that consider the kinetics of butyl acrylate polymerization in single phase system both experimentally and from the modelling perspective.…”

Free Radical Entry and Secondary Nucleation in Styrene Emulsion Polymerization: A DLVO Approach

“…This results in both the MMD and PSD being broader. In the case of PSD, this effect, combined with high rates of chain transfer to the monomer within the particles and desorption of the produced radical, can eventually lead to bimodal distributions [3, 4]. Conversely, the larger the ρ , the less the difference between active and inactive chains and particles, and therefore the narrower the MMDs and PSDs will be [5].…”