Influence of water on cure kinetics via Eb-irradiated epoxy resin

Research output: Contribution to conferencePaperpeer-review


The purpose of this investigation is to gain further understanding of the influence of water on phenyl glycidyl ether (PGE) and diglycidyl ether of bisphenol A (DGEBA). A near infrared (NIR) spectroscopy technique reported earlier was further developed to perform real-time in-situ kinetic analysis of radiation induced, electron beam (EB) and UV, cationic polymerization of epoxy systems with water. NIR spectroscopy was used to quantify the concentration of water in PGE and DGEBA prior to cure. The chemical kinetics results indicate that the presence of water affects the polymerization of the epoxy systems by (a) the appearance of a pronounced retardation period, (b) an accelerated reaction following the retardation period when compared to "dry" systems, and (c) higher conversion at shorter times. A kinetic mechanism was proposed to explain this behavior and a model based on this mechanism was found to be in good qualitative agreement with experimental results. It was also shown that the presence of water influences the behavioral characteristics of cationically cured epoxies by reducing Tg and increasing fracture toughness.

Original languageEnglish (US)
Number of pages1
StatePublished - 2005
Externally publishedYes
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: Oct 30 2005Nov 4 2005


Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
Country/TerritoryUnited States
CityCincinnati, OH

All Science Journal Classification (ASJC) codes

  • General Engineering


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