Intersegmental interaction and critical concentrations in PET–HFIP solutions
| Autor: | M. F. Sonnenschein, C. M. Roland |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Ethylene
Polymers and Plastics Stereochemistry Dimer Physics::Medical Physics Fluorescence spectrometry Concentration effect Condensed Matter Physics Spectral line chemistry.chemical_compound chemistry Chemical physics Intermolecular interaction Materials Chemistry Chemical solution Physical and Theoretical Chemistry Equilibrium constant |
| Zdroj: | Journal of Polymer Science Part B: Polymer Physics. 29:431-436 |
| ISSN: | 1099-0488 0887-6266 |
| DOI: | 10.1002/polb.1991.090290405 |
| Popis: | Spectroscopic determinations of the concentrations associated with the onset of intermolecular interaction in solutions of poly(ethylene terephthalate) (PET) are described. The intersegment forces perturb the electronic spectra and induce ground-state aggregation. These phenomena become observable at different chain densities, reflecting the influence of concentration on the coil dimensions, as well as the dynamical nature of the interactions. An estimate of the equilibrium constant for PET dimer formation in hexafluoroisopropanol is reported. |
| Databáze: | OpenAIRE |
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