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Optimized production of multilayered monodisperse polymer nanoparticles
journal contributionposted on 06.05.2015, 15:58 by Brahim Benyahia, M. Abderrazak Latifi, Christian Fonteix, Fernand Pla
A dynamic optimization frame work is used to produce in a controlled way multilayered latex nanoparticles. The key feature of the method is to track a glass transition temperature profile, which is designed to produce polymer layers with the targeted properties. Several constraints are considered to achieve better control and produce nanoparticles with a specified particle diameter and layers’ thicknesses. To enhance the control of the different layers, two separate monomer feeds are considered under starving conditions throughout the fed-batch stages. The emulsion copolymerization of styrene and butyl acrylate in the presence of n-C12 mercaptan, as chain transfer agent (CTA), is illustrated here as a case study. The optimal feed profiles of the preemulsioned monomers are obtained using a genetic algorithm.
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