Self-organization of macromolecules and liquid-crystalline phase transitions in solutions of cellulose esters
| Autor: | T. V. Terziyan, I. S. Tyukova, S. A. Vshivkov, A. G. Galyas, A. V. Shepetun, L. I. Kutsenko |
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| Rok vydání: | 2011 |
| Předmět: |
chemistry.chemical_classification
Physics::Biological Physics Phase transition Polymers and Plastics Stereochemistry technology industry and agriculture Supramolecular chemistry Polarization Microscopy Concentration effect Polymer Polarization (waves) chemistry Chemical engineering Materials Chemistry Physics::Chemical Physics Phase diagram Macromolecule |
| Zdroj: | Polymer Science Series A. 53:1-5 |
| ISSN: | 1555-6107 0965-545X |
| DOI: | 10.1134/s0965545x1101010x |
| Popis: | For hydroxypropyl cellulose-ethanol, hydroxyethyl cellulose-water, and cyanoethyl cellulose-DMAA systems, phase diagrams are constructed and the regions of existence of isotropic and anisotropic phases and the dimensions of macromolecules and supramacromolecular particles in a wide composition range are determined through the use of the cloud-point method, polarization microscopy, the turbidityspectrum method, dynamic light-scattering measurements, and a polarization optical apparatus. It is shown that the formation of LC phases with an increase in the polymer concentration is associated with a significant enlargement of supramolecular particles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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