Separation of polymers differing in their chain architecture by interaction chromatography: Phase equilibria and conformational behavior of polymers in strongly adsorbing porous media
| Autor: | Karel Procházka, Xiu Wang, Zuzana Limpouchová |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Chromatography Materials science Polymers and Plastics Elution Mass balance Organic Chemistry Monte Carlo method 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Partition coefficient Adsorption chemistry Phase (matter) Materials Chemistry 0210 nano-technology Porous medium |
| Zdroj: | Polymer. 175:99-106 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2019.05.006 |
| Popis: | Understanding the competition between adsorption on confining interfaces and conformational behavior of polymers in confined volumes is a necessary condition for correct interpretation of chromatographic curves. Accordingly, we investigated the conformational behavior of linear (L) and star (S) polymers and the impact of the chain architecture on phase equilibria in porous media using Monte Carlo (MC) simulations. We focused on interaction chromatography (IC) under conditions close to the critical adsorption point (CAP). We evaluated the concentration-dependent partition coefficients by MC and used them as an input for the solution of a time-discretized mass balance equation which predicts the shapes of the elution curves. The study elucidates the effects of chain architecture on the IC separation mechanism and shows that IC is a promising method for the separation of L and S polymers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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