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Abstract:

One of the most popular cured rubbers used in industrial applications is styrene butadiene rubber (SBR) and frequently its network structure is studied by means of swelling techniques in solvent. Normally, toluene is used as solvent in this test. In order to estimate the crosslink density from the equilibrium volume fraction of rubber in the swollen state, the correct evaluation of the Flory-Huggins interaction parameter χ is necessary. This work covers the swelling behavior of cured SBR in toluene. The rubber was vulcanized with different amounts sulfur and accelerator at 433 K in order to obtain several network structures and crosslink densities. Network characterisations of the compounds were made by swelling measurements in the frame of the Flory-Rehner relationship using the molecular weight of the network chain between chemical crosslinks obtained previously by mechanical tests. A relationship between χ and vr, the polymer volume fraction at equilibrium (maximum) degree of swelling, was established for the cured SBR/toluene system. It was found that χ is not a constant but depends on the crosslink density in the sample. The types of crosslinks in these samples where estimated applying this function to the swelling behavior of the compounds previously treated with the thiol probe method. © 2007 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Evaluation of the polymer-solvent interaction parameter χ for the system cured styrene butadiene rubber and toluene
Autor:Marzocca, A.J.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Pabellón 1, Buenos Aires (1428), Argentina
Palabras clave:Crosslinking; Flory-Huggins interaction parameter; Styrene butadine rubber; Swelling; Toluene; Butadiene; Crosslinking; Solvents; Styrene; Swelling; Toluene; Volume fraction; Vulcanization; Crosslink density; Flory-Huggins interaction parameters; Styrene butadiene rubber; Rubber
Año:2007
Volumen:43
Número:6
Página de inicio:2682
Página de fin:2689
DOI: http://dx.doi.org/10.1016/j.eurpolymj.2007.02.034
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_v43_n6_p2682_Marzocca

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Citas:

---------- APA ----------
(2007) . Evaluation of the polymer-solvent interaction parameter χ for the system cured styrene butadiene rubber and toluene. European Polymer Journal, 43(6), 2682-2689.
http://dx.doi.org/10.1016/j.eurpolymj.2007.02.034
---------- CHICAGO ----------
Marzocca, A.J. "Evaluation of the polymer-solvent interaction parameter χ for the system cured styrene butadiene rubber and toluene" . European Polymer Journal 43, no. 6 (2007) : 2682-2689.
http://dx.doi.org/10.1016/j.eurpolymj.2007.02.034
---------- MLA ----------
Marzocca, A.J. "Evaluation of the polymer-solvent interaction parameter χ for the system cured styrene butadiene rubber and toluene" . European Polymer Journal, vol. 43, no. 6, 2007, pp. 2682-2689.
http://dx.doi.org/10.1016/j.eurpolymj.2007.02.034
---------- VANCOUVER ----------
Marzocca, A.J. Evaluation of the polymer-solvent interaction parameter χ for the system cured styrene butadiene rubber and toluene. Eur Polym J. 2007;43(6):2682-2689.
http://dx.doi.org/10.1016/j.eurpolymj.2007.02.034