Impact fracture toughness of polyethylene/polypropylene multilayers.: An article from: Polymer Engineering and Science

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on September 1, 2004. The length of the article is 5258 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: In a number of applications, a brittle polymeric surface layer is deliberately molded onto a tough substrate for decorative or protective purposes. This can increase the susceptibility of the tough polymer to premature failure. Similar problems arise when a surface layer becomes embrittled by environmental effects. Choosing a surface material that has good mechanical properties without having this effect can be difficult. In this work the fracture resistances of two polyethylenes and an ethylene/propylene copolymer, and of symmetrical two-component multilayers of these polymers, were determined as a function of temperature, using instrumented impact tests. The law of mixtures accounts adequately for the fracture resistance of multilayer structures where there is no mechanical interaction between skin and core. However, it gave misleading results for a structure in which high skin modulus at low temperatures appeared to influence the fracture resistance of the core through a constraint effect. Polym. Eng. Sci. 44:1627-1635, 2004. [c] 2004 Society of Plastics Engineers.

Citation Details
Title: Impact fracture toughness of polyethylene/polypropylene multilayers.
Author: Luisa Moreno
Publication:Polymer Engineering and Science (Refereed)
Date: September 1, 2004
Publisher: Society of Plastics Engineers, Inc.
Volume: 44 Issue: 9 Page: 1627(9)

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