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Abstract:

Blends of natural rubber and styrene-butadiene rubber were prepared by solution mixing and vulcanized with a system sulfur-accelerator at 433 K and 443 K in order to study the vulcanization kinetic and the influence of the vulcanization temperature on the final structure of the blends. The kinetic of vulcanization was analyzed under the frame of the Han's model, which takes into account the reversion effect once the time to achieve the maximum torque in the rheometer curves is surpassed. The crosslink density was also determined in all samples by means of swelling in solvent. The average free nanohole volume was estimated using positron annihilation lifetime spectroscopy. When changing the vulcanization temperature of the blends, remarkable changes in the crosslink densities and the free nanohole volumes were detected. Furthermore, a correlation between the average fractional free nanohole volume and the fraction of polymer in the swollen state was established. © 2015 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing
Autor:Mansilla, M.A.; Marzocca, A.J.; Macchi, C.; Somoza, A.
Filiación:IFIMAT y CIFICEN (CONICET-UNCPBA), Pinto 399, Tandil, B7000GHG, Argentina
Laboratorio de Polímeros y Materiales Compuestos, Departamento de Física, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CICPBA), Argentina
Palabras clave:NR; PALS; Rubber blends; SBR; Swelling; Vulcanization; Kinetics; Mixing; Positron annihilation spectroscopy; Styrene; Swelling; Vulcanization; Micro-structural properties; NR; PALS; Positron annihilation lifetime spectroscopy; Rubber blends; SBR; Structure of the blend; Styrene butadiene rubber; Rubber
Año:2015
Volumen:69
Página de inicio:50
Página de fin:61
DOI: http://dx.doi.org/10.1016/j.eurpolymj.2015.05.025
Título revista:European Polymer Journal
Título revista abreviado:Eur Polym J
ISSN:00143057
CODEN:EUPJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00143057_v69_n_p50_Mansilla

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Citas:

---------- APA ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C. & Somoza, A. (2015) . Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing. European Polymer Journal, 69, 50-61.
http://dx.doi.org/10.1016/j.eurpolymj.2015.05.025
---------- CHICAGO ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. "Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing" . European Polymer Journal 69 (2015) : 50-61.
http://dx.doi.org/10.1016/j.eurpolymj.2015.05.025
---------- MLA ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. "Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing" . European Polymer Journal, vol. 69, 2015, pp. 50-61.
http://dx.doi.org/10.1016/j.eurpolymj.2015.05.025
---------- VANCOUVER ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing. Eur Polym J. 2015;69:50-61.
http://dx.doi.org/10.1016/j.eurpolymj.2015.05.025