Modification of Epoxy Polymers with Small Additives
of Multiwall Carbon Nanotubes

S. V. Kondrashov^b, V. P. Grachev^a,*, R. V. Akatenkov^b, V. N. Aleksashin^b,
I. S. Deev^b, I. V. Anoshkin^d, E. G. Rakov^c, and V. I. Irzhak^a

^a Institute of Problems of Chemical Physics, Russian Academy of Sciences, pr. Akademika Semenova 1,
Chernogolovka, Moscow oblast, 142432 Russia

^b All-Russia Research Institute of Aviation Materials, ul. Radio 17, Moscow, 105005 Russia

^c Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047 Russia

^d Department of Applied Physics, School of Science, Aalto University, PO Box 15100, 00076 AALTO, Finland

*e-mail: grachov@icp.ac.ru

Received September 26, 2013;
Revised Manuscript Received December 12, 2013

Abstract—The effect of small additives of functionalized multiwall carbon nanotubes used as a modifier on
the formation and properties of epoxy polymers cured with diaminodiphenyl sulfone is investigated. In the
range of additive concentrations 0.01–0.50 wt %, there are extreme dependences of dynamic storage modulus
and the glass-transition temperature on modifier concentration. As shown by electron microscopy and X-ray
scattering, regions with increased packing densities of macromolecules are formed in the polymers in the pres-
ence of the modifier. The effect of the specific surface on the kinetics of curing of epoxy resins is observed. A
mechanism controlling the formation of the epoxy matrix that is responsible for the inhomogeneous polymer
structuring that defines the final properties of the polymers is suggested.

DOI: 10.1134/S0965545X14030079

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