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Conductive polymer blends with low carbon black loading: High impact polystyrene/thermoplastic elastomer (styrene‐isoprene‐styrene)
Author(s) -
Tchoudakov R.,
Breuer O.,
Narkis M.,
Siegmann A.
Publication year - 1997
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11843
Subject(s) - materials science , carbon black , polystyrene , styrene , composite material , electrical conductor , thermoplastic elastomer , isoprene , copolymer , percolation threshold , electrical resistivity and conductivity , thermoplastic , percolation (cognitive psychology) , phase (matter) , conductive polymer , polymer blend , polymer , natural rubber , organic chemistry , chemistry , engineering , neuroscience , electrical engineering , biology
Electrical resistivity and morphology of high impact polystyrene (HIPS)/styrene‐isoprene‐styrene copolymer (SIS)/carbon black (CB) blends were studied. Conductive CB particles locale preferentially within the HIPS phase of the HIPS/SIS blends. The blends studied remain conductive as long as HIPS maintains a continuous phase and the effective CB concentration within HIPS surmounts its percolation threshold. Thus, blends containing 2 phr CB depict significant changes in resistivity with the HIPS/SIS composition, transforming from insulative to conductive. SIS/CB mixtures exhibit an unusual behavior, explained by a physical model suggested in this paper and extended to the HIPS/SIS/CB systems.