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Abstract:

Blends of natural rubber (NR) and styrene-butadiene rubber (SBR) were prepared by solution mixing and vulcanized with sulfur and accelerator in a Semi-EV system at 433 K and 443 K in order to study the vulcanization kinetic and the influence of vulcanization temperature on final structure of the blends. The vulcanization kinetic studied through the variation in rheometer curves was analyzed using the Ding and Leonov model, which takes into account the reversion effect during the cure process. The average free nanohole volume and the fractional free volume of samples with different NR/SBR ratio were estimated using positron annihilation lifetime spectroscopy (PALS). Also, the crosslink density was determined by means of swelling tests in a solvent. For all the compounds, a correlation between the free nanohole volume and the delta torque obtained from the respective rheometer curves was established. © 2017 Elsevier Ltd

Registro:

Documento: Artículo
Título:Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties
Autor:Mansilla, M.A.; Marzocca, A.J.; Macchi, C.; Somoza, A.
Filiación:INTI, CONICET, Centro de Caucho, Av. General Paz 5445, San Martín, B1650WAB, Argentina
Laboratorio de Polímeros y Materiales Compuestos, Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, C1428EHA, Argentina
IFIMAT (UNCPBA) and CIFICEN (UNCPBA-CONICET-CICPBA), Pinto 399, Tandil, B7000GHG, Argentina
Palabras clave:NR; PALS; Rubber blends; SBR; Swelling; Vulcanization; Curing; Mixing; Positron annihilation spectroscopy; Rheometers; Styrene; Sulfur; Swelling; Vulcanization; Cross-link densities; Fractional free volume; Micro-structural properties; PALS; Positron annihilation lifetime spectroscopy; Rubber blends; Structure of the blend; Styrene butadiene rubber; Rubber
Año:2017
Volumen:63
Página de inicio:150
Página de fin:157
DOI: http://dx.doi.org/10.1016/j.polymertesting.2017.07.025
Título revista:Polymer Testing
Título revista abreviado:Polym Test
ISSN:01429418
CODEN:POTED
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01429418_v63_n_p150_Mansilla

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Citas:

---------- APA ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C. & Somoza, A. (2017) . Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties. Polymer Testing, 63, 150-157.
http://dx.doi.org/10.1016/j.polymertesting.2017.07.025
---------- CHICAGO ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. "Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties" . Polymer Testing 63 (2017) : 150-157.
http://dx.doi.org/10.1016/j.polymertesting.2017.07.025
---------- MLA ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. "Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties" . Polymer Testing, vol. 63, 2017, pp. 150-157.
http://dx.doi.org/10.1016/j.polymertesting.2017.07.025
---------- VANCOUVER ----------
Mansilla, M.A., Marzocca, A.J., Macchi, C., Somoza, A. Natural rubber/styrene-butadiene rubber blends prepared by solution mixing: Influence of vulcanization temperature using a Semi-EV sulfur curing system on the microstructural properties. Polym Test. 2017;63:150-157.
http://dx.doi.org/10.1016/j.polymertesting.2017.07.025