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Salgueiro, W.; Somoza, A.; Marzocca, A.J.; Torriani, I.; Mansilla, M.A. "A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends" (2009) Journal of Polymer Science, Part B: Polymer Physics. 47(23):2320-2327
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Abstract:

A small-angle X-ray scattering (SAXS) and swelling study of natural rubber and styrene-butadiene rubber blends (NR/SBR) is presented. To this aim, specimens of NR and SBR and blends with 75/25, 50/50, and 25/75 NR/SBR ratios (in phr) were prepared at a cure temperature of 433 K and the optimum cure time (t100). This time was obtained from rheometer torque curves. The system of cure used in the samples was sulfur/n-t-butyl-2-benzothiazole sulfenamide. From swelling tests of the cured samples, information about the molecular weight of the network chain between chemical crosslinks was obtained. For all cured compounds, in the Lorentz plots built from SAXS scattering curves, a maximum of the scattering vector q around 0.14 Å -1 was observed. However, the q position shows a linear-like shift toward lower values when the SBR content in the SBR/NR blend increases. In pure NR or SBR the q values show a different tendency. The results obtained are discussed in terms of the existence of different levels of vulcanization for each single phase forming the blend and the existence of a third level of vulcanization located in the interfacial NR/SBR layer. © 2009 Wiley Periodicals, Inc.

Registro:

Documento: Artículo
Título:A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends
Autor:Salgueiro, W.; Somoza, A.; Marzocca, A.J.; Torriani, I.; Mansilla, M.A.
Filiación:IFIMAT-UNCentro, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Pinto 399, B7000GHG Tandil, Argentina
LPMPyMC, Departamento de Física, Ciudad Universitaria, Pabellón I, C1428EGA Buenos Aires, Argentina
Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, CP 6165, 13084-971 Campinas, Sao Paulo, Brazil
Palabras clave:Blends; NR; Rubber; Rubber blends; SAXS; SBR; Vulcanization; Benzothiazoles; Butadiene rubber; Chemical crosslinks; Cure temperature; Cure time; Lorentz; Natural Rubber; Network chains; NR; Q-values; Rubber blends; Scattering curve; Scattering vectors; Single phase; Small angle X-ray scattering; Styrene butadiene rubber; Sulfenamides; Swelling studies; Swelling test; Third level; Torque curves; Butadiene; Crosslinking; Curing; Scattering; Styrene; Vulcanization; X ray scattering; Rubber
Año:2009
Volumen:47
Número:23
Página de inicio:2320
Página de fin:2327
DOI: http://dx.doi.org/10.1002/polb.21828
Título revista:Journal of Polymer Science, Part B: Polymer Physics
Título revista abreviado:J Polym Sci Part B
ISSN:08876266
CODEN:JPBPE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08876266_v47_n23_p2320_Salgueiro

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Citas:

---------- APA ----------
Salgueiro, W., Somoza, A., Marzocca, A.J., Torriani, I. & Mansilla, M.A. (2009) . A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends. Journal of Polymer Science, Part B: Polymer Physics, 47(23), 2320-2327.
http://dx.doi.org/10.1002/polb.21828
---------- CHICAGO ----------
Salgueiro, W., Somoza, A., Marzocca, A.J., Torriani, I., Mansilla, M.A. "A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends" . Journal of Polymer Science, Part B: Polymer Physics 47, no. 23 (2009) : 2320-2327.
http://dx.doi.org/10.1002/polb.21828
---------- MLA ----------
Salgueiro, W., Somoza, A., Marzocca, A.J., Torriani, I., Mansilla, M.A. "A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends" . Journal of Polymer Science, Part B: Polymer Physics, vol. 47, no. 23, 2009, pp. 2320-2327.
http://dx.doi.org/10.1002/polb.21828
---------- VANCOUVER ----------
Salgueiro, W., Somoza, A., Marzocca, A.J., Torriani, I., Mansilla, M.A. A SAXS and swelling study of cured natural rubber/styrene-butadiene rubber blends. J Polym Sci Part B. 2009;47(23):2320-2327.
http://dx.doi.org/10.1002/polb.21828