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Abstract:

Blends of natural rubber (NR) and styrene butadiene rubber (SBR) were prepared with sulfur and n-t-butyl-2-benzothiazole sulfonamide (TBBS) as accelerator, varying the amount of each polymer in the blend. Samples were analysed by rheometer curing at 433 K until their maximum torque was reached. The miscibility among the constituent polymers of the cured compounds was studied in a broad range of temperatures by means of differential scanning calorimetry, analyzing the glass transition temperatures of the samples. The specific heat capacity of the compounds was also determined. Thermal diffusivity of the samples was measured in the temperature range from 130 to 400 K with a new device that performs measurements in vacuum. The thermal results are explained on the basis of the structure formed during the vulcanization of the samples considering the variation of the crosslink density of each phase. Finally, a serial thermal conduction model that takes into account the contribution of each phase to the thermal diffusivity was used to fit the experimental results. © 2008 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Thermal properties in cured natural rubber/styrene butadiene rubber blends
Autor:Goyanes, S.; Lopez, C.C.; Rubiolo, G.H.; Quasso, F.; Marzocca, A.J.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Dto. de Física, Ciudad Universitaria, Pabellon 1, 1428 Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
Departamento de Materiales, CNEA, Av. del Libertador 8250, 1424 Buenos Aires, Argentina
Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy
Palabras clave:Glass transition temperature; NR/SBR blends; Specific heat; Thermal diffusivity; Vulcanization; Aromatic polymers; Crosslinking; Differential scanning calorimetry; Glass transition; Rheology; Solubility; Thermal diffusivity; Vulcanization; N-t-butyl-2-benzothiazole sulfonamide (TBBS); NR/SBR blends; Styrene butadiene rubber (SBR); Rubber
Año:2008
Volumen:44
Número:5
Página de inicio:1525
Página de fin:1534
DOI: http://dx.doi.org/10.1016/j.eurpolymj.2008.02.016
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_v44_n5_p1525_Goyanes

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Citas:

---------- APA ----------
Goyanes, S., Lopez, C.C., Rubiolo, G.H., Quasso, F. & Marzocca, A.J. (2008) . Thermal properties in cured natural rubber/styrene butadiene rubber blends. European Polymer Journal, 44(5), 1525-1534.
http://dx.doi.org/10.1016/j.eurpolymj.2008.02.016
---------- CHICAGO ----------
Goyanes, S., Lopez, C.C., Rubiolo, G.H., Quasso, F., Marzocca, A.J. "Thermal properties in cured natural rubber/styrene butadiene rubber blends" . European Polymer Journal 44, no. 5 (2008) : 1525-1534.
http://dx.doi.org/10.1016/j.eurpolymj.2008.02.016
---------- MLA ----------
Goyanes, S., Lopez, C.C., Rubiolo, G.H., Quasso, F., Marzocca, A.J. "Thermal properties in cured natural rubber/styrene butadiene rubber blends" . European Polymer Journal, vol. 44, no. 5, 2008, pp. 1525-1534.
http://dx.doi.org/10.1016/j.eurpolymj.2008.02.016
---------- VANCOUVER ----------
Goyanes, S., Lopez, C.C., Rubiolo, G.H., Quasso, F., Marzocca, A.J. Thermal properties in cured natural rubber/styrene butadiene rubber blends. Eur Polym J. 2008;44(5):1525-1534.
http://dx.doi.org/10.1016/j.eurpolymj.2008.02.016