Structures and Properties of Nanocomposites
Based on a Cured Cycloaliphatic Epoxy Resin

A. A. Askadskii^a,d,*, E. S. Afanas’ev^a, M. D. Petunova^a, A. I. Barabanova^a,
L. M. Goleneva^a, V. I. Kondrashchenko^b, and O. E. Philippova^c

^a Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991 Russia

^b Moscow State University of Railway Engineering, Federal Agency for Railway Transport,
ul. Obraztsova 9, Moscow, 127994 Russia

^c Faculty of Physics, Moscow State University, Moscow, 119991 Russia

^d Moscow State University of Civil Engineering, Yaroslavskoe sh. 26, Moscow, 129337 Russia

*e-mail: andrey@ineos.ac.ru

Received May 22, 2013;
Revised Manuscript Received November 5, 2013

Abstract—The effect of nanoparticles on glass-transition temperature T_g and the elastic modulus of a
cycloaliphatic epoxy resin cured with methylhexahydrophthalic anhydride is theoretically analyzed. The anal-
ysis was performed with allowance for the following factors: the chemical structure of the polymer, the chem-
ical structures of the nanoparticles and their surfaces if they are modified, the concentrations and shapes of
nanoparticles (spherical, plate, cylindrical), the concentration of functional groups on the surfaces of nanopar-
ticles, the energy of intermolecular interaction between a polymer and a nanoparticle, and the possibility of
chemical interaction between a polymer and the surfaces of nanoparticles. The most pronounced effect on T_g is
exerted by cylindical nanotubes, whose surfaces are modified with OH groups, which give rise to hydrogen
bonding. The least effect is exerted by spherical nanoparticles. After the introduction of SiO₂ nanoparticles, the
elastic moduli of nanocomposites increase by a factor of 1.15 at an amount of nanoparticles up to 20%.

DOI: 10.1134/S0965545X14030018

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