Organic-inorganic nanocomposites prepared by reactive suspension method: investigation on filler/matrix interactions and their effect on the nanoparticles dispersion

Vincenzo Renda, Eugenio Caponetti, Giorgio Nasillo, Davide Morselli, Massimo Messori, Federica Bondioli, Alberto Spinella

Risultato della ricerca: Articlepeer review

6 Citazioni (Scopus)

Abstract

Epoxy resin/TiO2nanocomposites prepared by both reactivesuspension method, based on in situ synthesis, and conventional mechanical mixing are analysed by solid-state nuclear magnetic resonance and transmission electron microscopy in order to have a deeper insight into the nature of interactions at the polymer/particle interface and their effect on the nanoparticles dispersion. Specifically, solid-state nuclear magnetic resonance experiments showed that the nanoparticles, synthesized by reactive suspension method, can efficiently link the matrix by hydrogen bonds forming a hybrid organic-inorganic 3D network. Such evidences strongly supports our previously reported theory, in which the nanoparticles in situ synthesized by reactive suspension method act not only as rigid filler, but also as actual cross-linking points, dramatically improving the mechanical properties of the polymeric matrix. Moreover, as revealed by transmission electron microscopy investigations, the formation of such hydrogen bonds significantly affect also the nanoparticles distribution, thanks to a stabilizing effect on the nanoparticlesâ surface that prevents their aggregation and improves their dispersion.
Lingua originaleEnglish
pagine (da-a)695-701
Numero di pagine7
RivistaColloid and Polymer Science
Volume295
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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