Reactivity of Silicon-Based Epoxy Monomers as Studied by Near-Infrared Spectroscopy and Multivariate Curve Resolution Methods

L. A. MERCADO; M. GALIÀ; J. A. REINA; M. GARRIDO; M. S. LARRECHI; F. X. RIUS

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY

Wiley

Año: 2006 vol. 44 p. 1447 - 1456

0887-624X

The reaction of glycidyloxydimethylphenyl silane with aniline was used as a model system to study the reactivity of silicon-based epoxy monomers. The reaction was monitored online by near-infrared spectroscopy, and the evolution of the concentration of each species throughout the reaction was determined by the application of multivariate curve resolution/alternating least squares to the set of recorded spectra. The reactivity was evaluated by a comparison of the concentration profiles obtained for the glycidyloxydimethylphenyl silane/aniline system with those of phenylglycidyl ether/aniline as a reference system. The results confirmed that the reactivity of the silicon-based epoxy monomer was higher and that its ring opening reaction was faster because of electronic effects.