Studies on a new craze phenomenon in bisphenol-A polycarbonate: Craze initiation by stress-activated molecular disentanglement
| Autor: | M. Dettenmaier, H. H. Kausch |
|---|---|
| Rok vydání: | 1981 |
| Předmět: |
chemistry.chemical_classification
Polypropylene Materials science Bisphenol-A-polycarbonate Polymers and Plastics Polymer Stress (mechanics) chemistry.chemical_compound Colloid and Surface Chemistry chemistry visual_art Polyamide Materials Chemistry visual_art.visual_art_medium Molecular mechanism Physical and Theoretical Chemistry Polycarbonate Composite material Deformation (engineering) |
| Zdroj: | Colloid and Polymer Science. 259:937-945 |
| ISSN: | 1435-1536 0303-402X |
| Popis: | It is demonstrated that under appropriate deformation conditions intrinsic crazes (crazes II) are initiated in unoriented and pre-oriented polycarbonate which is stretched to its natural draw ratio. Molecular disentanglement is proposed as the mechanism governing craze II initiation. The same molecular mechanism must be assumed to play an important role for the fracture of polycarbonate and for other instability phenomena such as those associated with the self-oscillations of polyethyleneterephthalate, polypropylene and polyamide and with the stress-whitening of polymethylmethacrylate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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