Acoustic determination of molecular orientation in polymers
| Autor: | S. G. Osinin, M. P. Nosov, B. D. Rysyuk |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics General Mathematics General Engineering Polymer Condensed Matter Physics Industrial and Manufacturing Engineering Amorphous solid Biomaterials chemistry.chemical_compound Draw ratio chemistry Mechanics of Materials Orientation (geometry) Solid mechanics Ceramics and Composites Polyethylene terephthalate Ultrasonic sensor Fiber Composite material |
| Zdroj: | Polymer Mechanics. 12:21-27 |
| ISSN: | 1573-8922 0032-390X |
| DOI: | 10.1007/bf00857195 |
| Popis: | On the basis of the results of measurements of the ultrasonic propagation velocity in polyethylene terephthalate fibers it is shown that the Moseley formula is suitable for determining the molecular orientation of both amorphous and amorphouscrystalline polymers. The dependence of the molecular orientation factor of amorphous and crystalline specimens of polyethylene terephthalate on the draw temperature and draw ratio is investigated. The effect of polymer orientation on the ultrasonic shear-wave velocity in the fiber is studied. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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