Effect of morphology on the electric conductivity of binary polymer blends filled with carbon black

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Institute of Polymer Composites, Zhejiang University, Hangzhou, Zhejiang 310027, China ^{[1
]}

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]}

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Journal of Applied Polymer Science | 2007年 / 106卷 / 03期

关键词：

Several carbon black (CB)-filled binary polymer blends were prepared in Haake rheometer. Distribution states of CB and effect of morphology on the electric conductivity of different ternary composites were investigated. Under our experimental condition CB particles located preferentially at the interface between polymethyl methacrylate (PMMA) and polypropylene (PP) in PMMA/PP/CB composites; in high-density polyethylene (HDPE) phase in PP/HDPE/CB composites; and in Nylon6 (PA6) phase in polystyrene (PS)/PA6/CB; PP/PA6/CB; PMMA/PA6/CB; and polyacrylonitrile (PAN)/PA6/CB composites; the ternary composites in which CB particles locate at the interface of two polymer components have the highest electric conductivity when the mass ratio of the two polymers is near to 1 : 1. The ternary composites in which CB particles located preferentially in one polymer have the highest electric conductivity usually when the amount of the polymer component having CB particles is comparatively less than the amount of the polymer component not having CB particles; if the formulations of PS/PA6/CB; and PMMA/PA6/CB composites equaled and PA6/CB in them is in dispersed phase; PS/PA6/CB composites have the highest electric conductivity and PP/PA6/CB composites have the lowest electric conductivity; suitable amount of PS or PAN in PA6/CB composites increase the electric conductivity due in the formation of a parallel electrocircuit for electrons to transmit. © 2007 Wiley Periodicals; Inc;

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页码：2008 / 2017

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