Morphological characterization by SEM, TEM and AFM of nanoparticles and functional nanocomposites based on natural rubber filled with oxide nanopowders
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Data
2014-01-01
Autores
Bellucci, Felipe Silva [UNESP]
Salmazo, Leandra Oliveira [UNESP]
Budemberg, Eduardo Roque [UNESP]
Guerrero, Ariel Rodrigo
Aroca, Ricardo Flavio
Nobre, Marcos Augusto de Lima
Job, Aldo Eloizo [UNESP]
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Editor
Trans Tech Publications Ltd
Resumo
Nanocomposites were prepared from mixture of different concentrations of ferroelectric nanoparticles in an elastomeric matrix based on the vulcanized natural rubber. The morphological characterization of nanocomposites was carried out using Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and Atomic force microscopy (AFM). The nanocrystalline ferroelectric oxide is potassium strontium niobate (KSN) with stoichiometry KSr2Nb5O15, and was synthesized by the chemical route using a modified polyol method, obtaining particle size and microstrain equal to 20 nm and 0.32, respectively. These ferroelectric nanoparticles were added into the natural rubber in concentrations equal to 1, 3, 5, 10, 20 and 50 phr (parts per hundred of rubber) forming ferroelectric nanocomposites (NR/KSN). Using morphological characterization, we identified the maximum value of surface roughness at low concentrations, in particular, sample with 3 phr of nanoparticles and factors such as encapsulation and uniformity in the distribution of nanoparticles into the natural rubber matrix are investigated and discussed.
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Oxide nanopowders, Natural rubber, Ferroelectric nanocomposites, Morphological characterization
Como citar
Brazilian Ceramic Conference 57. Stafa-zurich: Trans Tech Publications Ltd, v. 798-799, p. 426-431, 2014.