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Optimized production of multilayered monodisperse polymer nanoparticles
journal contributionposted on 06.05.2015 by Brahim Benyahia, M. Abderrazak Latifi, Christian Fonteix, Fernand Pla
Any type of content formally published in an academic journal, usually following a peer-review process.
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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