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Photopolymerization of Epoxy Coatings Containing Iron-Oxide Nanoparticles

✍ Scribed by Marco Sangermano; Aldo Priola; Galder Kortaberria; Amaia Jimeno; Ignacio Garcia; Inaki Mondragon; Giancarlo Rizza

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
310 KB
Volume
292
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Iron‐oxide nanoparticles were functionalized with epoxy groups and were dispersed into a dicyclo‐aliphatic epoxy resin to obtain organic‐inorganic hybrid coatings via cationic ring‐opening photopolymerization. TEM investigations confirmed that the filler has a size‐distribution range between 5 to 20 nm, without the formation of aggregates. The influence of the presence of Fe~2~O~3~ on the rate of polymerization was investigated by real time FT‐IR spectroscopy. Increasing the iron‐oxide nanofiller in the photocurable resin induced an increase in the T~g~ values. By controlling the phase separation it was possible to obtain transparent iron‐oxide nanostructured coatings, characterized by improved hardness.

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