TY - JOUR
T1 - Organic-inorganic nanocomposites prepared by reactive suspension method: investigation on filler/matrix interactions and their effect on the nanoparticles dispersion
AU - Renda, Vincenzo
AU - Caponetti, Eugenio
AU - Nasillo, Giorgio
AU - Morselli, Davide
AU - Messori, Massimo
AU - Bondioli, Federica
AU - Spinella, Alberto
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Colloid and Surface Chemistry
KW - Dispersion
KW - H-bonds
KW - Hybrid nanocomposite
KW - Materials Chemistry2506 Metals and Alloys
KW - Nanoparticles/polymer interface
KW - Physical and Theoretical Chemistry
KW - Polymers and Plastics
KW - Reactive suspension method
KW - Colloid and Surface Chemistry
KW - Dispersion
KW - H-bonds
KW - Hybrid nanocomposite
KW - Materials Chemistry2506 Metals and Alloys
KW - Nanoparticles/polymer interface
KW - Physical and Theoretical Chemistry
KW - Polymers and Plastics
KW - Reactive suspension method
UR - http://hdl.handle.net/10447/244775
M3 - Article
VL - 295
SP - 695
EP - 701
JO - Colloid and Polymer Science
JF - Colloid and Polymer Science
SN - 0303-402X
ER -