Relation between deformation and rotational isomerism
| Autor: | I.I. Novak, P.M. Pakhomov, M. V. Shablygin, V. E. Korsukov |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics General Mathematics General Engineering Thermodynamics Polymer Deformation (meteorology) Polyethylene Condensed Matter Physics Industrial and Manufacturing Engineering Amorphous solid Biomaterials chemistry.chemical_compound chemistry Mechanics of Materials Polymer chemistry Ceramics and Composites Polyethylene terephthalate Elongation Absorption (chemistry) Cis–trans isomerism |
| Zdroj: | Polymer Mechanics. 11:919-922 |
| ISSN: | 1573-8922 0032-390X |
| DOI: | 10.1007/bf00857614 |
| Popis: | In uniaxially oriented polyethylene and polyethylene terephthalate films conformational transitions were studied by the absorption IR-spectroscopy method during deformation of the specimens carried to rupture in a wide range of temperatures and with different loading methods. It is shown that upon elongation of the polymers the concentration of trans isomers increases and that of gauche isomers decreases. A linear unique relation is obtained between the number of rotational isomers and magnitude of deformation in the amorphous parts of the investigated polymers. It is hypothesized that the conformational transitions determine the magnitude of deformation of amorphous-crystal-line polymers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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