Morphology and fracture properties of modified bisphenol a and novolac type vinyl ester resins

J. Karger-Kocsis, O. Gryshchuk

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The morphology-toughness relationship of vinyl ester resins was studied as a function of their modification. Bisphenol A based and novolac-based vinyl ester resins were modified by a star-shaped polyether polymer with vinyl and hydroxyl functionalities and/or by a poly-isocyanate. The polyisocyanate- containing systems were termed vinyl ester/urethane hybrids. The morphology of the crosslinked resins was studied with dynamic mechanical thermal analysis and atomic force microscopy with ioneroded specimens and discussed. The toughness of the crosslinked resins was assessed by the linear elastic fracture mechanics with compact tension specimens. The fracture toughness and energy changed fairly linearly as functions of Mc and Mc0.5, respectively, where Mc is the mean molecular mass between crosslinks.

Original languageEnglish
Pages (from-to)4012-4022
Number of pages11
JournalJournal of Applied Polymer Science
Volume100
Issue number5
DOIs
Publication statusPublished - Jun 5 2006

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Keywords

  • Atomic force microscopy (AFM)
  • Crosslinking
  • Fracture
  • Networks
  • Toughness

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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