Modeling and Multiobjective Optimization of A Fed-Batch Emulsion Copolymerization Process to Control the Resulting Particles Core-Shell Morphology
| Autor: | Christian Fonteix, Brahim Benyahia, Mohamed Abderrazak Latifi, Fernand Pla |
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| Rok vydání: | 2011 |
| Předmět: |
Molar mass
Materials science Polymers and Plastics Organic Chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Multi-objective optimization 0104 chemical sciences Transfer agent Scientific method Polymer chemistry Materials Chemistry Copolymer Sensitivity (control systems) 0210 nano-technology Biological system Glass transition Differential algebraic equation |
| Zdroj: | Macromolecular Symposia. 302:142-150 |
| ISSN: | 1022-1360 |
| Popis: | Summary: This paper deals with the design and control of the morphology of core-shell nanoparticles elaborated by fed-batch emulsion copolymerization of styrene and butyl-acrylate in the presence of a chain transfer agent (n-dodecyl mercaptan). A mathematical model was elaborated and validated. It consists of a system of differential algebraic equations involving 49 unknown kinetic and thermodynamic parameters, many of them being impossible to be accurately estimated, due to the lack of experimental data. A method based on the sensitivity analysis allowed us to determine a subset of the 21 most influential parameters. The 28 non estimable parameters were taken from the literature. The validated model was then used in a dynamic multiobjective optimization to optimize the best profile of the pre-emulsion feed rate to control (i) the composition and average molar masses of the copolymer, (ii) the instantaneous glass transition temperature, corresponding to a core-shell morphology suited for special end-use properties. |
| Databáze: | OpenAIRE |
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