Please use this identifier to cite or link to this item: http://ri.uaemex.mx/handle20.500.11799/80183
Title: Thickness effect on electric resistivity on polystyrene and carbon black- based composites
Authors: SUSANA HERNANDEZ LOPEZ 
ENRIQUE VIGUERAS SANTIAGO 
MIGUEL MAYORGA ROJAS 
DELFINO REYES CONTRERAS 
Keywords: polymer composites;electric resistivity;carbon black;info:eu-repo/classification/cti/1
Publisher: Journal of Physics: Conference Series
Project: 169;
Description: Changes on electrical resistivity were experimentally studied for polystyrene and carbon black-based composites respect to the temperature. 22% w/w carbon black composite films at 30 μm, 2mm y 1cm thick were submitted to thermal heating-cooling cycles from room temperature to 100°C, slightly up to Tg of the composite. For each cycle changes on electrical resistivity constituent a hysteresis loop that depends on the sample thickness. The changes during the heating stage could be explained as a consequence of the thermal expansion and mobility of the polymer chains at Tg, producing a disconnecting of the electrical contacts among carbon black particles and an important increasing (200%) of the electrical resistivity. For each cycle, the hysteresis loop was observed in thicker samples, whereas for 30 ? m thickness sample the hysteresis loop was lost after four cycles.
CONACYT
Other Identifiers: http://hdl.handle.net/20.500.11799/80183
Rights: info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0
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