Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedad Mexicana de Física A.C.
2020
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| _version_ | 1866817174939631616 |
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| author | Luis Alfredo Martínez |
| author_facet | Luis Alfredo Martínez |
| contents | Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay Luis Alfredo Martínez R. Perera L. Tarife Física, Astronomía y Matemáticas natural Rubber Dipolar relaxations Clay nanocomposites space charge relaxations 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 Cloisiter15A displays the highest degree of exfoliation, which suggests 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 Tg, 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. 2020 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57082932002 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.66 |
| format | Artículo científico |
| id | redalyc_57082932002 |
| language | en |
| publishDate | 2020 |
| publisher | Sociedad Mexicana de Física A.C. |
| spellingShingle | Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay Luis Alfredo Martínez Física, Astronomía y Matemáticas natural Rubber Dipolar relaxations Clay nanocomposites space charge relaxations Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay Luis Alfredo Martínez R. Perera L. Tarife Física, Astronomía y Matemáticas natural Rubber Dipolar relaxations Clay nanocomposites space charge relaxations 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 Cloisiter15A displays the highest degree of exfoliation, which suggests 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 Tg, 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. 2020 artículo científico 0035-001X https://www.redalyc.org/articulo.oa?id=57082932002 en http://www.redalyc.org/revista.oa?id=570 Revista Mexicana de Física application/pdf Sociedad Mexicana de Física A.C. Revista Mexicana de Física (México) Num.2 Vol.66 |
| title | Quantitative and qualitative analysis of segmental dielectric relaxations and space charge by TSDC in nanocomposites of natural rubber/clay |
| topic | Física, Astronomía y Matemáticas natural Rubber Dipolar relaxations Clay nanocomposites space charge relaxations |
| url | https://www.redalyc.org/articulo.oa?id=57082932002 |