Effect of Purification on the Electrical Properties of Nanocomposites Reinforced with Multiwalled Carbon Nanotubes
Por:
Moreno-Bárcenas A., Manzano-Ramírez A., Reyes-Araiza J.L., Apatiga L.M., Apatiga A.-E., Coelho, LAF, Morales-Hernández J., Velázquez-Castillo R., Pérez-Hermosillo E., Rubio-González C.
Publicada:
1 sep 2013
Categoría:
Organic Chemistry
Resumen:
The effect of the G to D band intensity (IG/ID) ratio, percentage of
Sp(2) hybridization and percent of impurities on the electrical
resistivity of nanocomposites reinforced with multi-walled carbon
nanotubes (MWCNT) has been studied. The MWCNT were purified by reflux,
selective oxidation, sonication and mixed oxidative method. The IG/ID
ratio was determined by RAMAN spectroscopy, the percent of impurities
was determined by TGA whereas the percentage of Sp(2) hybridization and
carbons bonds by XPS. The resistivity measurements showed how
nanocomposites prepared with MWCNTs treated by the mixed oxidative
method has the lowest volumetric resistivity values; fact ascribed to
the structural changes on the outer shells resulted from the mixed
method along to the formation of conductive aggregates where the number
of contacts per fiber increases. Hence, for electrical conductivity in
CNT/polymer composites, Sp2 hybridization couples with an agglomerated
structure have a beneficial effect on electrical conductivity.
Filiaciones:
Moreno-Bárcenas A.:
CINVESTAV-Querétaro, Libramiento Norponiente # 2000, Fraccionamiento Real de Ju, Queretaro, QRO, C. P. 76230, Mexico
Manzano-Ramírez A.:
CINVESTAV-Querétaro, Libramiento Norponiente # 2000, Fraccionamiento Real de Ju, Queretaro, QRO, C. P. 76230, Mexico
Reyes-Araiza J.L.:
Research fellow at DIPFI, Universidad Autónoma de Querétaro, C.U. Cerro de las Campanas S/N, Querétaro, QRO., C.P. 76010, Mexico
Apatiga L.M.:
Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro, Mexico
Apatiga A.-E.:
Centro de Investigación en Materiales Avanzados, CIMAV S.C., Laboratorio Nacional de Nanotecnologia, Complejo Industrial Chihuahua, Miguel de Cervantes # 120, Chihuahua 31109, Mexico
Morales-Hernández J.:
Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C., Parque Tecnológico Querétaro S/N, Sanfandila, Pedro Escobedo, QRO. C.P. 76703, Mexico
Velázquez-Castillo R.:
División de Investigación y Posgrado, Universidad Autónoma de Querétaro, Cerro de las campanas s/n, Querétaro, QRO, Mexico
Pérez-Hermosillo E.:
Technology Park, Tenologico de Mon Cam Queretaro Av Prolo. Tec. Norte #801, Fracc. San Pablo, CP 76130, Querétaro, QRO, Mexico
Rubio-González C.:
Centro de Ingenieria y desarrollo industrial, Pie de la cuesta 702. Desarrollo San Pablo, Queretaro, Qro, Mexico
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