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Epoxy networks modified by multifunctional polyhedral oligomeric silsesquioxanes (POSS) containing amine groups

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Abstract

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.

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Authors and Affiliations

  1. Institute of Materials Science and Technology (INTEMA), University of Mar del Plata and National Research Council (CONICET), Av. J. B. Justo 4302, 7600, Mar del Plata, Argentina

    I. E. dell’Erba & R. J. J. Williams

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  1. I. E. dell’Erba
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  2. R. J. J. Williams
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Correspondence to R. J. J. Williams.

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dell’Erba, I.E., Williams, R.J.J. Epoxy networks modified by multifunctional polyhedral oligomeric silsesquioxanes (POSS) containing amine groups. J Therm Anal Calorim 93, 95–100 (2008). https://doi.org/10.1007/s10973-007-8805-1

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  • DOI: https://doi.org/10.1007/s10973-007-8805-1

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