Evaluation of the influence of the polymer-filler interaction on compounds based on epoxidized elastomeric matrix and precipitated silica



Título del documento: Evaluation of the influence of the polymer-filler interaction on compounds based on epoxidized elastomeric matrix and precipitated silica
Revista: Polimeros (Sao Carlos)
Base de datos: PERIÓDICA
Número de sistema: 000314279
ISSN: 1678-5169
Autores: 1


2
Instituciones: 1Universidade Federal do Rio Grande do Sul, Instituto de Quimica, Porto Alegre, Rio Grande do Sul. Brasil
2Deutsches Institut für Kautschuktechnologie e.V, Hannover, Niedersachsen. Alemania
Año:
Periodo: Abr-Jun
Volumen: 16
Número: 2
Paginación: 111-115
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés The introduction of epoxy groups into the main chain of elastomers has emerged as a promising alternative, considering the monitoring of polymer-filler interaction leading to changes in the properties of vulcanizates. The epoxidation reaction (in situ) was chosen to modify elastomers, such as polybutadiene (BR) and copolymer of styrene-butadiene-rubber (SBR), because it is a simple, easily controlled reaction, even considering the small epoxidation degree. The modification degree of the polymeric chain was studied with FT-IR and ¹H-NMR. The shift of the Tg to high temperatures with the increase of the epoxy group in the polymer chain was monitored through differential scanning calorimetry (DSC). An analysis of the dynamic modulus of the material in relation to its dependence on the amplitude and temperature was carried out. The interaction between epoxidized elastomeric matrix and silica as filler was extremely improved, even in the presence of very low content of epoxy groups into the polymer chain
Disciplinas: Química
Palabras clave: Química de polímeros,
Epoxidación,
Estireno-butadieno-caucho (SBR),
Elastómeros,
Calorimetría diferencial de barrido
Keyword: Chemistry,
Polymer chemistry,
Epoxidation,
Styrene-butadiene-rubber (SBR),
Elastomers,
Differential scanning calorimetry
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