Conoscopic investigation of the optical properties of kapron and polyethylene monofilaments
| Autor: | A. Z. Golik, M. A. Genina |
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| Rok vydání: | 1972 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics business.industry General Mathematics General Engineering Polymer Polyethylene Condensed Matter Physics Ellipsoid Industrial and Manufacturing Engineering Biomaterials chemistry.chemical_compound Cross section (physics) Optics chemistry Mechanics of Materials Orientation (geometry) Ceramics and Composites Crystallite Anisotropy business Principal axis theorem |
| Zdroj: | Polymer Mechanics. 4:459-463 |
| ISSN: | 1573-8922 0032-390X |
| DOI: | 10.1007/bf00855753 |
| Popis: | The conoscopic method of investigation is applied to anisotropic crystalline polymers (kapron and polyethylene monofilaments). The conoscopic figures obtained for various stretch ratios show that the optical properties of the monofilaments are similar to those of biaxial positive crystals and can be characterized by an optic indicatrix in the form of an ellipsoid with three nonequal principal axes. The angle of the optic axes 2E is the measured parameter of the optic indicatrix. This angle varied with the stretch ratio and over the cross section of the monofilaments. The variation of the angle 2E with stretch ratio may be associated both with orientation of the crystallites and with the nature of the packing in the crystalline regions of the monofilament. The variation of the angle 2E over the cross section of the monofilaments indicates nonuniformity of the optical properties in the radial direction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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