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Evaluation of the dispersion properties of graphene oxide/cetyltrimethylammonium bromide for application in nanocomposite materials.
Sánchez-Cepeda, Angela; Cedeño, E; Marín, E; Pazos, M Carolina; Ingrid, Silva-Cote; Muñoz, Efrén de Jesús; Vera-Graziano, Ricardo.
Afiliación
  • Sánchez-Cepeda A; Facultad de Ciencias Básicas, Escuela de Posgrados, Universidad Pedagógica y Tecnológica de Colombia UPTC Avda. Central del Norte, Vía Paipa 150001 Tunja Boyacá Colombia angelapatricia.sanchez@uptc.edu.co.
  • Cedeño E; Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Av. Legaria # 694, Col. Irrigación, Del. Miguel Hidalgo 11500 Ciudad de México Mexico.
  • Marín E; Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Av. Legaria # 694, Col. Irrigación, Del. Miguel Hidalgo 11500 Ciudad de México Mexico.
  • Pazos MC; Escuela de Ciencias Química, Facultad de Ciencias, Universidad Pedagógica y Tecnológica de Colombia UPTC Avda. Central del Norte, Vía Paipa Tunja Boyacá Colombia.
  • Ingrid SC; Unidad de Terapia Celular, Instituto Distrital de Ciencia, Biotecnología e Innovación en salud. IDCBIS Cra 32 #12-81 0571 Bogotá Colombia.
  • Muñoz EJ; Facultad de Ciencias Básicas, Escuela de Posgrados, Universidad Pedagógica y Tecnológica de Colombia UPTC Avda. Central del Norte, Vía Paipa 150001 Tunja Boyacá Colombia angelapatricia.sanchez@uptc.edu.co.
  • Vera-Graziano R; Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México UNAM Avda Universidad, C.U., Coyoacán 04510 Ciudad de México Mexico.
RSC Adv ; 14(5): 3267-3279, 2024 Jan 17.
Article en En | MEDLINE | ID: mdl-38249673
ABSTRACT
The properties of thermal diffusivity and Z potential of the GONPs/CTAB nanofluid were studied as a function of GO concentration (in the range between 4 and 12% w/v), temperature (35 and 50 °C) and time (30 and 60 min) under ultrasound. In turn, the structural properties of GONPs/CTAB were measured by XRD, Raman, SEM and TEM. The GO previously modified with CTAB was used to obtain a PLA/GO nanocomposite. It was found that the behavior of thermal diffusivity provides information in situ on the dispersion properties of the nanofluid, finding values from 0.0013 to 0.0024 cm2 s-1. The hydrodynamic diameter of the GONP dispersions was also determined to range from 75.83 to 360.3 nm with an increase in Z potential from 17 to 30 mV. The most stable GONPs/CTAB dispersion conditions were 6% w/v GO, 50 °C and 30 min. Under these conditions, the GONPs/CTAB materials present an increase in the spacing between GO layers, associated with a greater multilayer stacking of the GO and CTAB layers. The Raman spectrum allowed us to demonstrate that the modification with CTAB did not affect the crystallinity of GO, which was verified by the intensity ratio of the D band and the G band (ID/IG) for the GO/CTAB samples, with the exception of the GO 6% sample, where an increase in the ID/IG ratio (0.9) was observed compared to GO (0.82), associated with greater intercalation of CTAB between the GO sheets. Finally, an SEM analysis of the PLA/GO nanocomposite was carried out and the homogeneous distribution of GO in PLA was demonstrated when it is used as a filler in proportions of 0.1%. This treatment, in turn, contributed to improving the mechanical flexural properties of the nanocomposite materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido