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5640957 
Journal Article 
Electrical conductivity of polystyrene/styrene-butadiene block copolymer blends containing carbon black 
Gamboa, KMN; Ferreira, AJB; Camargo, SS; Soares, BG 
1997 
1 
Polymer Bulletin
ISSN: 0170-0839
EISSN: 1436-2449 
SPRINGER VERLAG 
NEW YORK 
38 
1 
95-100 
WOS:A1997WE94200014 
The electrical resistivity and mechanical properties of carbon black (CB)-filled polystyrene (PS)/styrene-butadiene block copolymer (SB) blends have been studied. Good electrical performance was achieved with pure SB and PS/SB blends indicating an inhomogeneity of these materials and the heterogeneous micro-dispersion of the CB particles. The percolation threshold of the filler inside SB or PS/SB blends is around 3.6wt%, which is lower than that expected for incompatible PS/PBD blend. The addition of small amount CB decreases the elongation at break of PS/SB blends indicating some disturbance at the interface of these compatible material.