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- Title
Nanostructure Evolution Mechanisms During Slow Load-Cycling of Oriented HDPE/PA Microfibrillar Blends as a Function of Composition.
- Authors
Zeinolebadi, Ahmad; Stribeck, Norbert; Ganjaee-Sari, Morteza; Dencheva, Nadya; Denchev, Zlatan; Botta, Stephan
- Abstract
Oriented precursors of MFCs consisting of HDPE and PA6 or PA12 are studied during strain-controlled slow load-cycling. In the PA6-containing blends a strongly retarded nanostrain response is detected. Compatibilization induces nanostrain heterogenization. Stress fatigue is lower in the PA12 blends, but hardly decreased by the compatibilizer. Selective migration of the compatibilizer into a disordered semi-crystalline fraction of the HDPE matrix can explain the findings. The semi-crystalline HDPE entities in PA6 blends appear more disordered than in PA12-blends. An analysis of the HDPE nanostructure evolution during cycling reveals epitaxial strain crystallization. Uncompatibilized PA6 blends cycled about high pre-strain show plastic flow but nanoscopic shrinkage in the semi-crystalline stacks.
- Publication
Macromolecular Materials & Engineering, 2012, Vol 297, Issue 11, p1102
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201100375