Determination of individual diffusion coefficients in evolving binary mixtures by taylor dispersion analysis: application to the monitoring of polymer reaction
| Autor: | Michel Martin, Luca Cipelletti, Rachid Matmour, Jean-Philippe Biron, Hervé Cottet |
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| Přispěvatelé: | Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] (IBMM), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Laboratoire des colloïdes, verres et nanomatériaux (LCVN), Université Montpellier 2 - Sciences et Techniques (UM2)-Centre National de la Recherche Scientifique (CNRS), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Physique et mécanique des milieux hétérogenes (UMR 7636) (PMMH), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP) |
| Rok vydání: | 2010 |
| Předmět: |
Hydrodynamic radius
Polymers Polyacrylamide Radical polymerization Taylor dispersion INFINITE DILUTION Analytical chemistry 02 engineering and technology 01 natural sciences Analytical Chemistry Diffusion chemistry.chemical_compound [CHIM.ANAL]Chemical Sciences/Analytical chemistry SIZE-BASED CHARACTERIZATION Diffusion (business) ARIS DISPERSION chemistry.chemical_classification LIQUID-SYSTEMS INSTRUMENT INTEGRAL-EQUATIONS 010401 analytical chemistry CAPILLARY-ELECTROPHORESIS Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Polymerization TRANSLATIONAL DIFFUSION POLYSTYRENE Polymer blend 0210 nano-technology CLUSTERS |
| Zdroj: | Analytical Chemistry Analytical Chemistry, American Chemical Society, 2010, 82 (5), pp.1793-1802. ⟨10.1021/ac902397x⟩ |
| ISSN: | 1520-6882 0003-2700 |
| DOI: | 10.1021/ac902397x⟩ |
| Popis: | International audience; This study demonstrates that it is possible to get valuable information on the individual populations of a binary mixture from the signal obtained by Taylor dispersion analysis (TDA). In the case of mixtures composed of two populations of different sizes (such as a monomer/polymer mixture), the information available from TDA is not restricted to an average diffusion coefficient or an average hydrodynamic radius calculated on the entire binary mixture. In this work, TDA was used to monitor a polymerization reaction. In this scope, it has been possible to determine the degree of conversion and the weight average hydrodynamic radius of the polymer at different reaction times. Three different methods are proposed for the data processing of taylorgrams derived from polymerization mixtures or, more generally, for taylorgrams of binary mixtures. These three methods, either based on deconvolution or on integration of the signal, were found to give similar results. TDA results obtained for a model binary mixture of acrylamide and standard polyacrylamide were consistent with DLS experiments provided that the differences in the type of average hydrodynamic radius values between the two methods are taken into account. An example of application to the monitoring of acrylamide radical polymerization is shown. |
| Databáze: | OpenAIRE |
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