Resumo

SOARES, Bluma G.; FERREIRA, Angelo J. B.  e  CAMARGO JR., Sérgio. Condutividade elétrica de misturas de poliestireno/polibutadieno e poliestireno/copolímero em bloco de estireno-butadieno contendo negro de fumo.. Polímeros [online]. 1998, vol.8, n.1, pp.61-66. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14281998000100009.

ABSTRACT: The electrical conductivity of polystyrene/ polybutadiene (PS/PBD) and polystyrene/ styrene-butadiene block copolymer (PS/SB) blends containing extra-conductive carbon black has been investigated. PS/SB blends displayed lower percolation threshold than PS/PBD blends. Scanning electronic microscopy analysis indicated that the carbon black particles are agglomerated and do not form a continuous conducting pathway. Investigations concerning the polymerfiller physical interaction (bound rubber) suggest also a stronger adhesion between polymer and filler in the case of PS/PBD blends

Palavras-chave : Conducting composites; carbon black; polymer blends.

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