On the essential work of fracture in polymer-metal multilayers

Géraldine Garnier, Béchir Chehab, Bernard Yrieix, Yves Bréchet, Lionel Flandin

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Polyethylene terephtalate (PET) metallized with aluminium by physical vapour deposition was investigated through classical physical chemistry techniques and mechanical characterization. The amount of aluminium altered the amount of crystallinity of the PET substrate, but appeared unrelated to the mechanical properties obtained with regular tensile test. In contrast, the essential work of fracture (EWF), as obtained with Cotterell tests, permitted to better discriminate the perforation resistance. It is shown that increasing the amount of crystallinity within the PET linearly reduced the EWF.

Original languageEnglish
Pages (from-to)5537-5543
Number of pages7
JournalJournal of Materials Science
Issue number20
Publication statusPublished - Oct 2009
Externally publishedYes

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