Título

Thickness effect on electric resistivity on polystyrene and carbon black- based composites

Autor

SUSANA HERNANDEZ LOPEZ

ENRIQUE VIGUERAS SANTIAGO

MIGUEL MAYORGA ROJAS

DELFINO REYES CONTRERAS

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

polymer composites - ([1742-6596]) electric resistivity - ([1742-6596]) carbon black - ([1742-6596]) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI)

Resumen o descripción

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

Editor

Journal of Physics: Conference Series

Fecha de publicación

noviembre de 2009

Tipo de publicación

Artículo

Recurso de información

http://hdl.handle.net/20.500.11799/80183

Fuente

1742-6596

Idioma

Inglés

Relación

169;

Audiencia

Estudiantes

Investigadores

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DE LA UAEM

Descargas

313