Plywood-like structure of injection-moulded polypropylene

Plywood-like structure of injection-moulded polypropylene Injection-moulded products having unique structure, in which the direction of molecular orientation in the skin layer is perpendicular to that in the core layer, are developed employing isotactic polypropylene with a nucleating agent. The extraordinary three-layered structure with β trigonal crystal form in the core layer, which shows higher impact strength than the conventional α monoclinic form, leads to high level of toughness. Moreover, an injection-moulded product having five-layered structure is also demonstrated in this paper. Because of the complicated crack propagation nature due to the abrupt change of molecular orientation, which avoids fractured pieces with sharp-edge, the products with plywood-like structure will be employed in various applications to improve the safety. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Polymer Elsevier

Plywood-like structure of injection-moulded polypropylene

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Publisher
Elsevier
Copyright
Copyright © 2010 Elsevier Ltd
ISSN
0032-3861
D.O.I.
10.1016/j.polymer.2010.10.007
Publisher site
See Article on Publisher Site

Abstract

Injection-moulded products having unique structure, in which the direction of molecular orientation in the skin layer is perpendicular to that in the core layer, are developed employing isotactic polypropylene with a nucleating agent. The extraordinary three-layered structure with β trigonal crystal form in the core layer, which shows higher impact strength than the conventional α monoclinic form, leads to high level of toughness. Moreover, an injection-moulded product having five-layered structure is also demonstrated in this paper. Because of the complicated crack propagation nature due to the abrupt change of molecular orientation, which avoids fractured pieces with sharp-edge, the products with plywood-like structure will be employed in various applications to improve the safety.

Journal

PolymerElsevier

Published: Nov 26, 2010

References

  • International Tables for Crystallography
    Wilson, A.J.C.; Prince, E.

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