Mapping water uptake in an epoxy-phenolic coating

Suzanne Morsch, Stuart Lyon, Stuart Smith, Simon Gibbon

Research output: Contribution to journalArticlepeer-review

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Abstract

Water sorption in epoxy networks is associated with deleterious physical effects such as swelling, hydrolysis, lowering of the Tg, cracking and crazing. Nonetheless, water uptake in epoxy coatings is poorly understood in relation to macromolecular structure. In this contribution, we study the effect of cure time (closely related to cross-linking density and free volume) on water uptake for a model epoxy-phenolic coating. Localised water uptake is then mapped with nanoscale lateral resolution using AFM-IR, and correlated to cross-linking density
Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalProgress in Organic Coatings
Volume86
DOIs
Publication statusPublished - 3 Jun 2015

Keywords

  • AFM-IR
  • Water uptake
  • Epoxy-phenolic
  • Free volume

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