Physico-chemical studies of polymeric carriers: 2. Molecular mass determination of poly(N-vinylpyrrolidone-co-maleic acid) fractions
| Autor: | Ferenc Tüdős, Mária Azori, Éva Csákvári |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Maleic acid Molecular mass Comonomer N-Vinylpyrrolidone General Chemistry Polymer Condensed Matter Physics Polyelectrolyte Light scattering chemistry.chemical_compound Hydrolysis chemistry Polymer chemistry Materials Chemistry |
| Zdroj: | Polymer Bulletin. 5:673-677 |
| ISSN: | 1436-2449 0170-0839 |
| DOI: | 10.1007/bf00255309 |
| Popis: | Critical interpretation of the various conceptions concerning the problems in characterization of linear polyelectrolyte type polymers containing maleic acid as a comonomer is given. Proper conditions to avoid the fundamental experimental difficulties are proposed. Our conception is supported by molecular light scattering measurements of hydrolysed, fractionated poly (N-vinylpyrrolidone-co-maleic anhydride) samples. It was found that the problems were eliminated by the reduction of the degree of dissociation of carboxyl groups to a minimum value. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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