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À propos de : Copolymerization between A3 and B2 with Ring Formation and DifferentIntrinsic Reactivity in One of the Monomers        

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  • Copolymerization between A3 and B2 with Ring Formation and DifferentIntrinsic Reactivity in One of the Monomers
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  • We present two models for the stepwise copolymerization between a three-functionalmonomer A3 and a bifunctional monomer B2 where both intramolecular reaction and different intrinsicreactivities of reactive sites are present. The difference in reactivities may be either on the A sites or theB sites, leading to two different models. The models may calculate both pregel and postgel parameters.One of the two models presents a nonsymmetrical response to the rate constant ratio. Each of thenonidealities was previously known to lead to a delay in gel point when considered individually; we findin this work that when present simultaneously they may either reinforce or compensate each other,depending on the reacting conditions. We reinterpret some experimental data from the literature usingone of the models, with satisfactory results.
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