| Autor: |
A.Ye. Chalykh, A.V. Kotova, S.M. Mezhikovskii, N.N. Avdeyev |
| Rok vydání: |
1982 |
| Předmět: |
|
| Zdroj: |
Polymer Science U.S.S.R.. 24:503-510 |
| ISSN: |
0032-3950 |
| DOI: |
10.1016/0032-3950(82)90037-5 |
| Popis: |
The interference micromethod has been used to study the phase equilibrium in the systems polyvinyl chloride+linear oligoether acrylates of the p-ethylene and p-oxyethylene dimethacrylate type. The diagrams of the phase state obtained for all the systems studied are characterized by the presence of an upper critical temperature of dissolution the value of which depends on the chemical nature and the molecular mass of the oligomers. Comparison of the experimental and calculated data shows that the analytical description of the phase diagrams satisfactorily fits into the theory of Flory-Huggins. The chemical nature and length of the chain of the oligoether acrylates studied fundamentally influence the value of the parameter of interaction and its temperature dependence. These factors also influence change in the excess chemical potential, the mixing enthalpy and the non-combinatorial mixing entropy. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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