NMR investigation of commercial carbon black filled vulcanized natural rubber exposed to petrodiesel/biodiesel mixtures

Autor(es)

Silva, Lorena M. A. ; Andrade, Fabiana Diuk ; Filho, Elenilson G. A. ; Monteiro, Marcos Roberto ; de Azevedo, Eduardo Ribeiro ; Venancio, Tiago

• Tipo de documento: Artigo Científico
• Fonte: FUEL; v. 186, p. 50-57, DEC 15 2016.
• Citações Web of Science: 4

Resumo

The impact of biodiesel on the durability of the engine is a growing concern due to its corrosive characteristics. Nuclear magnetic resonance in the frequency (High Resolution NMR spectroscopy) and time (TD-NMR) domains were complementarily used to understand structural, dynamical and chemical modifications in commercial carbon black filled vulcanized natural rubber (CBVNR) due to contact with petroleum diesel/biodiesel mixtures. The results indicated that in biodiesel rich mixtures, besides the expected swelling effect, the interaction of fuel mixtures with CBVNR promotes the exudation of the filler together with attached polymer chains, which increases the number of defects and induces gaps in the remained network structure. The exudation of carbon black aggregates indicates that searching of fillers/elastomers combinations with higher affinity is an important parameter in the development of materials compatible with biodiesel. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 11/14099-3 - Uso de RMN no domínio do tempo para caracterização de sistemas orgânicos de alta viscosidade
• Beneficiário: Fabiana Diuk de Andrade
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 09/18354-8 - Dinâmica e estrutura de sistemas poliméricos estudados por ressonância magnética nuclear
• Beneficiário: Eduardo Ribeiro de Azevedo
• Modalidade de apoio: Auxílio à Pesquisa - Regular