In-plane fracture toughness of PET fiber-reinforced paper as a function of UV-irradiation

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2 Citations (Scopus)


The essential work of fracture (EWF) method was used to assess the in-plane toughness of a paper containing poly(ethylene terephthalate) (PET) and cellulose fibers before and after ultraviolet (UV) aging. It was found that this paper meets the basic requirements of the EWF method, at least in the yielding/blunting-related stage. The related EWF terms decreased with increasing UV aging. A similar trend was observed for the tensile mechanical parameters. Fractographic inspection showed that UV aging resulted in improved wetting of the PET fibers by the binder used. Instead of its beneficial effect, however, an adverse trend was found. This was traced to the UV-caused "embrittlement" of the cellulose fibers, which hampered the deformability of the web composed of PET and cellulose fibers.

Original languageEnglish
Pages (from-to)671-683
Number of pages13
JournalJournal of Macromolecular Science - Physics
Volume43 B
Issue number3
Publication statusPublished - May 1 2004


  • Essential work of fracture
  • PET fiber reinforcement
  • Reinforced paper
  • Ultraviolet aging

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Polymers and Plastics
  • Materials Chemistry

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