Rheological properties of concentrated solutions of high-molecular-weight polyacrylonitrile in dimethyl sulfoxide
| Autor: | T. I. Podol’skaya, E. A. Rogova, A. V. Makarov, N. I. Kuz’min |
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| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Molecular mass Dimethyl sulfoxide General Chemical Engineering Polyacrylonitrile General Chemistry Polymer Instability Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics chemistry.chemical_compound Viscosity chemistry Chemical engineering Rheology Polymer chemistry General Materials Science Shear flow |
| Zdroj: | Fibre Chemistry. 43:104-107 |
| ISSN: | 1573-8493 0015-0541 |
| DOI: | 10.1007/s10692-011-9314-3 |
| Popis: | The rheological properties of concentrated solutions of polyacrylonitrile in dimethyl sulfoxide are studied in steady and dynamic regimes of shear flow as a function of the molecular–mass characteristics of the polymer. It is found that as the molecular mass of PAN increases, the elastic component of the solution viscosity increases more rapidly than the viscous component; this is one of the main reasons for the instability of the formation and structural nonuniformity of fibers. |
| Databáze: | OpenAIRE |
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