Mechanical properties of epoxy composites based on silver nanoparticles formed in situ View Full Text


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Article Info

DATE

2014-05-13

AUTHORS

L. M. Bogdanova, L. I. Kuzub, E. A. Dzhavadyan, V. I. Torbov, N. N. Dremova, A. D. Pomogailo

ABSTRACT

The mechanical and thermomechanical properties of metal-containing epoxy composite films based on silver nanoparticles synthesized in situ are investigated. There is a nonmonotonic dependence of the mechanical properties on the concentration of silver myristate used as a precursor. It is found for the first time that the breaking strength and elastic modulus increase by a factor of 1.8–1.5 relative to those of the unmodified matrix at a small concentration of precursor nanoparticles (on the order of 0.1 wt %). DSC and thermomechanical studies reveal that the glass-transition temperature decreases slightly (by 5–6°C) as the precursor concentration is increased to 0.5 wt %, thereby suggesting a weak plasticization of the modified epoxy matrix. On the basis of the spectrophotometry data measured in the region of surface plasmon resonance of silver nanoparticles (420–425 nm) and SEM data, it is inferred that the in situ strengthening of an epoxy nanocomposite based on epoxy resin ED-20, triethylamine, and silver myristate is attained because silver nanoparticles smaller than 20 nm in size and having a narrow particle-size distribution are formed during curing. More... »

PAGES

304-310

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0965545x14030031

DOI

http://dx.doi.org/10.1134/s0965545x14030031

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1053205097


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