Scanning tunneling microscope observations of polymer fracture surfaces
| Autor: | D.M. Kulawansa, J. T. Dickinson, S. C. Langford |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Materials science
Fracture in polymers Tension (physics) Mechanical Engineering Fractography Condensed Matter Physics Electrochemical scanning tunneling microscope law.invention Scanning probe microscopy Mechanics of Materials law visual_art Fracture (geology) visual_art.visual_art_medium General Materials Science Composite material Polycarbonate Scanning tunneling microscope |
| Zdroj: | Journal of Materials Research. 7:1292-1302 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.1992.1292 |
| Popis: | Scanning tunneling microscope observations of gold-coated polymer fracture surfaces are reported. We compare nm-scale surface features of poly(methyl methacrylate) (PMMA) fractured under three different loading conditions: in tension at room temperature, in tension at liquid nitrogen temperature, and in the double torsion geometry at room temperature (slow crack growth). Fracture surfaces of polystyrene and polycarbonate loaded in tension at room temperature are also described. Each of these surfaces shows distinctive nm-scale features which we interpret in terms of the interaction between craze growth (fibril formation) and crack growth along the craze boundary. The resolution of these images is sufficient to greatly complement other fractographic studies. |
| Databáze: | OpenAIRE |
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