Epoxy Networks Modified by Multifunctional Polyhedral Oligomeric Silsesquioxanes (POSS) Containing Amine Groups

I. E. DELL'ERBA AND R. J. J. WILLIAMS

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY

Weinheim

Lugar: Wiley-VCH; Año: 2007

1388-6150

The hydrolytic condensation of a precursor synthesized by the reaction of equimolar amounts of (3-aminopropyl)triethoxysilane and phenylglycidylether led to a distribution of polyhedral oligomeric silsesquioxanes (POSS) containing 8 ? 11 Si atoms, functionalized with amine groups. About 57 % of the NH functionalities were active for reaction with epoxy groups. The multifunctional amine-POSS was used to modify an epoxy network obtained by the homopolymerization of diglycidylether of bisphenol A initiated by benzyldimethylamine. The main effect of POSS modification was an increase in both the glassy and rubbery modulus explained, respectively, by the increase in cohesive energy and crosslink densities.