Crystalline transitions and the solid-state extrusion of polymers
| Autor: | J. P. Sibilia, S. M. Aharoni |
|---|---|
| Rok vydání: | 1979 |
| Předmět: |
chemistry.chemical_classification
Void (astronomy) Materials science Polymers and Plastics Scattering Solid-state General Chemistry Polymer Atmospheric temperature range Surfaces Coatings and Films Crystallinity Crystallography Chemical engineering chemistry Materials Chemistry Extrusion Lamellar structure |
| Zdroj: | Journal of Applied Polymer Science. 23:133-140 |
| ISSN: | 1097-4628 0021-8995 |
| DOI: | 10.1002/app.1979.070230112 |
| Popis: | Extrusion experiments on eight polymers in our laboratory and eight additional polymers in other laboratories reveal that solid-state extrusion and malleability occur in semicrystalline polymers that have a reversible crystalline transition, Tc, and do not occur in crystalline polymers devoid of Tc, The solid-state extrusion takes place only in the temperature range of Tc ≪ T < Tm. The transparency of the solid-state extrudates was shown to be largely due to void disappearance and may be due in part to the diminution in size of the scattering species. Increases in Tm were shown not to be correlatable with lamellar thickening or chain extension. |
| Databáze: | OpenAIRE |
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