Artículo

Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay

Martínez, L. A.; Perera, R.; Tarife.

Facultad de Ciencias, UNAM, publicado en Revista Mexicana de Física, y cosechado de Revistas UNAM

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Procedencia del contenido

Entidad o dependencia
Facultad de Ciencias, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Martínez, L. A., et al. (2020). Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay. Revista Mexicana de Física; Vol 66, No 2 Mar-Apr: 127-136. Recuperado de https://repositorio.unam.mx/contenidos/4108444

Descripción del recurso

Autor(es)
Martínez, L. A.; Perera, R.; Tarife.
Adscripción del autor
María Hernández, Decanato de Investigaciones USB, Departamento de Física USB
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay
Fecha
2020-03-01
Resumen
The effect of adding three different layered clays, a sodium montmorillonite and two commercial modified montmorillonites, on the morphology and molecular dynamics of natural rubber characterized by Transmission Electron Microscopy and Thermally Stimulated Depolarization Currents (TSDC) was studied. Carbon black was employed as reinforcing filler in a standard compound prepared and used for comparison purposes. The morphological results revealed that the sample with Cloisite\∘ledR 15A displays the highest degree of exfoliation, which suggests a stronger compatibility between the organic and inorganic phases. When the dispersion degree increases, a decrease of the activation energy was found from the quantitative analysis of the space charge dielectric relaxations.  From the qualitative analysis of the dipolar dielectric relaxations around T g , changes in  the dielectric relaxation profile and in the peak localization were attributed to probable interactions between the nanofillers and the elastomer in the glass transition region of the NR.
Tema
Dipolar relaxations, space charge relaxations, natural rubber/clay nanocomposites.
Idioma
eng
ISSN
2683-2224 (digital); 0035-001X (impresa)

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