Search results for "Free radical copolymerization"

showing 2 items of 2 documents

Copolymerization of VDF and HFP in Supercritical Carbon Dioxide: A Robust Approach for Modeling Precipitation and Dispersion Kinetics

2012

A kinetic model is developed for the heterogeneous free-radical copolymerization of vinylidene fluoride and hexafluoropropylene in supercritical CO 2. The model accounts for polymerization in both the dispersed (polymer-rich) phase and in the continuous (polymer-free) supercritical phase, for radical interphase transport, diffusion limitations, and chain-length-dependent termination in the polymer-rich phase. A parameter evaluation strategy is developed and detailed to estimate most of the kinetic parameters a priori while minimizing their evaluation by direct fitting. The resulting model predictions compare favorably with the experimental results of conversion and MWD at varying monomer fe…

Dispersion kineticChain-length-dependent terminationDiffusionSupercritical carbon dioxideSupercritical phaseCopolymerCopolymerizationKineticRobust approacheHexafluoropropyleneModel predictionFree radical polymerizationFree radical copolymerizationKinetic modelPolymers Supercritical fluid extractionSettore ING-IND/27 - Chimica Industriale E TecnologicaDiffusion limitationFluorine containing polymerMonomerParameter evaluationVinylidene fluoride Carbon dioxideHeterogeneous polymerizationMonomer concentrationFeed compositionSupercritical COModel
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Modeling Heterogeneous copolymerization in scCO2

2008

supercritical carbon dioxidemass transferFree radical copolymerizationkinetic model
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