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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 |
| Appears in Collections: | Producción |
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