Investigation of Interpolymer Complexation Between Poly(Vinylcaprolactam) and Poly(Maleic Acid-Alt-Styrene)
| Autor: | Dana Mihaela Suflet, Irina Popescu, Irina M. Pelin |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science Aqueous solution Polymers and Plastics Maleic acid Potentiometric titration Caprolactam 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Styrene Hydrophobic effect chemistry.chemical_compound chemistry Polymer chemistry Materials Chemistry Copolymer 0210 nano-technology |
| Zdroj: | Journal of Macromolecular Science, Part B. 55:708-721 |
| ISSN: | 1525-609X 0022-2348 |
| DOI: | 10.1080/00222348.2016.1187059 |
| Popis: | The interactions between two synthetic polymers used in biomedical applications, maleic acid-styrene copolymer (MAc-St) and poly(vinylcaprolactam) (PVCL), were investigated in dilute aqueous solution considering the influence of the pH, the added salt and the ratio between the components in the mixture. Hydrogen-bonding interactions between the COOH groups of MAc-St and the C═O groups of PVCL, together with hydrophobic interactions are involved in the formation of the interpolymer complex. The complex is insoluble below pH = 2.85 in aqueous solution, but the addition of NaCl enlarged the pH domain where the precipitation of the complex occurred. When the ratio between the polymers was varied, two maxima of the optical density were obtained: at a 1:1 ratio between the COOH and caprolactam groups, and also at a lower ratio (1:3). Other investigations, like the measurements of the turbidity in situ during mixing, and fluorescence, viscometric and potentiometric measurements were performed in order to... |
| Databáze: | OpenAIRE |
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