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Abstract:

Dielectric relaxation spectra in the frequency range from 10 Hz to 1 GHz were obtained at room temperature to study the influence of the network structure formed during vulcanization on the dielectric properties of polybutadiene rubber (BR). Two polybutadiene rubbers with different cis, trans and vinyl content in their molecular structure were used to prepare compounds with a cure system based on sulphur and TBBS (N-t-butyl-2-benzothiazole sulfenamide). Samples of each compound were vulcanized at 433 K for several times in order to obtain different crosslink densities. Structural changes in both compounds during vulcanization were measured by means of solid-state C-13 NMR spectroscopy. Dielectric permittivity was measured as function of the frequency and analyzed using the Havriliak-Negami model. The results show a clear dependence of the dielectric parameters on the crosslink density and 1,4-cis content. © 2011 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Influence of the microstructure of vulcanized polybutadiene rubber on the dielectric properties
Autor:Rodriguez Garraza, A.L.; Sorichetti, P.; Marzocca, A.J.; Matteo, C.L.; Monti, G.A.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, C1428EGA Buenos Aires, Argentina
Universidad de Buenos Aires, Facultad de Ingeniería, Departamento de Física, Av. Paseo Colón 850, Buenos Aires C1063ACV, Argentina
CONICET, Argentina
FaMAF, Universidad Nacional de Córdoba, Ciudad Universitaria, 5016 Córdoba, Argentina
Palabras clave:Crosslinking; Dielectric properties; Polybutadiene rubber; Cross-link densities; Cu-Re system; Dielectric parameters; Dielectric permittivities; Dielectric relaxation spectra; Frequency ranges; Havriliak-Negami model; Network structures; Polybutadiene rubber; Polybutadiene rubbers; Room temperature; Structural change; Sulfenamides; Dielectric relaxation; Nuclear magnetic resonance spectroscopy; Permittivity; Rubber; Sulfur; Vulcanization; Polybutadienes
Año:2011
Volumen:30
Número:6
Página de inicio:657
Página de fin:662
DOI: http://dx.doi.org/10.1016/j.polymertesting.2011.05.007
Título revista:Polymer Testing
Título revista abreviado:Polym Test
ISSN:01429418
CODEN:POTED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01429418_v30_n6_p657_RodriguezGarraza

Referencias:

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  • Hofmann, A., Alegria, A., Colmenero, J., Willner, L., Buscaglia, E., Hadjichristidis, N., Secondary and segmental relaxation in polybutadienes of varying microstructure: Dielectric relaxation results (1996) Macromolecules, 29 (1), pp. 129-134
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Citas:

---------- APA ----------
Rodriguez Garraza, A.L., Sorichetti, P., Marzocca, A.J., Matteo, C.L. & Monti, G.A. (2011) . Influence of the microstructure of vulcanized polybutadiene rubber on the dielectric properties. Polymer Testing, 30(6), 657-662.
http://dx.doi.org/10.1016/j.polymertesting.2011.05.007
---------- CHICAGO ----------
Rodriguez Garraza, A.L., Sorichetti, P., Marzocca, A.J., Matteo, C.L., Monti, G.A. "Influence of the microstructure of vulcanized polybutadiene rubber on the dielectric properties" . Polymer Testing 30, no. 6 (2011) : 657-662.
http://dx.doi.org/10.1016/j.polymertesting.2011.05.007
---------- MLA ----------
Rodriguez Garraza, A.L., Sorichetti, P., Marzocca, A.J., Matteo, C.L., Monti, G.A. "Influence of the microstructure of vulcanized polybutadiene rubber on the dielectric properties" . Polymer Testing, vol. 30, no. 6, 2011, pp. 657-662.
http://dx.doi.org/10.1016/j.polymertesting.2011.05.007
---------- VANCOUVER ----------
Rodriguez Garraza, A.L., Sorichetti, P., Marzocca, A.J., Matteo, C.L., Monti, G.A. Influence of the microstructure of vulcanized polybutadiene rubber on the dielectric properties. Polym Test. 2011;30(6):657-662.
http://dx.doi.org/10.1016/j.polymertesting.2011.05.007