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- Title
Ductile tear behavior of multilayered polypropylene homopolymer/ethylene 1-octene copolymer sheets.
- Authors
He, Guansong; Zhang, Fengshun; Yu, Huaning; Li, Jiang; Guo, Shaoyun
- Abstract
ABSTRACT The tear resistance of the polypropylene homopolymer (HPP)/ethylene 1-octene copolymer (POE) alternating multilayered sheets, which were prepared through multilayered coextrusion, was evaluated. Polarized optical microscope (POM) photographs revealed that HPP and POE layers aligned alternately vertical to the interfaces and continuously parallel to the extrusion direction. Tear results demonstrated the conventional blends had less tear-resistant than the multilayered samples. Large plastic deformation of HPP layer occurred in the multilayered structure during the stable crack growth, causing the tear energy to increase with the number of layers increasing. The measurements of PCMW2D IR and WAXD revealed that the large plastic deformation had a direct relationship with the crystal structure and termination of micro-cracks by interface. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43298.
- Subjects
POLYMER analysis; CRYSTAL structure; OXIDATION of ethylene; PLASTICITY measurements; INTERFACES (Physical sciences)
- Publication
Journal of Applied Polymer Science, 2016, Vol 133, Issue 19, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.43298