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Design and Study of Novel Composites Based on EPDM Rubber Containing Bismuth (III) Oxide and Graphene Nanoplatelets for Gamma Radiation Shielding.
Álvarez-Cortez, Gabriela; Molina, Francisco; Urbano, Bruno F; Dahrouch, Mohamed; Hernández Santana, Marianella; Manchado, Miguel A Lopez; Verdejo, Raquel; Aguilar Bolados, Héctor.
Afiliação
  • Álvarez-Cortez G; Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepcion 3349001, Chile.
  • Molina F; Centro de Investigación en Física Nuclear y Espectroscopia de Neutrones CEFNen, Comisión Chilena de Energía Nuclear, Santiago 7600713, Chile.
  • Urbano BF; Millennium Institute for Subatomic Physics at High Energy Frontier-SAPHIR, Santiago 7591538, Chile.
  • Dahrouch M; Departamento de Polímeros, Facultad de Ciencias Químicas, Universidad de Concepción, Concepcion 3349001, Chile.
  • Hernández Santana M; Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Concepcion 3349001, Chile.
  • Manchado MAL; Instituto de Ciencia y Tecnología de Polímeros (ICTP), CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain.
  • Verdejo R; Instituto de Ciencia y Tecnología de Polímeros (ICTP), CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain.
  • Aguilar Bolados H; Instituto de Ciencia y Tecnología de Polímeros (ICTP), CSIC, Juan de la Cierva, 3, 28006 Madrid, Spain.
Polymers (Basel) ; 16(5)2024 Feb 26.
Article em En | MEDLINE | ID: mdl-38475316
ABSTRACT
The mechanical, thermal and gamma radiation attenuation properties of ethylene-propylene-diene monomer (EPDM)-based composites containing graphene nanoplatelets (GNs) and bismuth (III) oxide nanoparticles (B) were investigated. The use of polyethylene glycol (PEG) as a compatibilizer to improve the dispersion of the fillers was also investigated. The results showed that the combined use of these fillers resulted in a drastic increase in mechanical properties, reaching 123% and 83% of tensile strength and elongation at break, respectively, compared to those of EPDM. In contrast, the addition of PEG to composites containing EPDM GNs and B resulted in composites with lower values of mechanical properties compared to the EPDM/B/GN-based composite. However, the presence of PEG leads to obtaining a composite (EPDM/B/GNP) with a mass attenuation coefficient to gamma radiation (137Cs, 662 keV) superior to that composite without PEG. In addition, the composite EPDM, B and PEG exhibited an elongation at break 153% superior to unfilled EPDM. Moreover, the binary filler system consisting of 100 phr of bismuth (III) oxide and 10 phr of GN leads to reaching 61% of the linear damping coefficient of the EPDM composite compared to that value of the unfilled EPDM. The study of the morphology and the state of filler dispersion in the polymer matrix, obtained using scanning electron microscopy and energy-dispersive X-ray spectroscopy, respectively, provides a useful background for understanding the factors affecting the gamma radiation attenuation properties. Finally, the results also indicated that by adjusting the formulation, it is possible to tune the mechanical and thermal properties of EPDM composites reinforced with bismuth oxide and graphene nanoplatelets.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Polymers (Basel) Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Chile País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Polymers (Basel) Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Chile País de publicação: Suíça