COMPORTAMIENTO REOLÓGICO DE SUSPENSIONES DE NANOTUBOS DE CARBONO CON APLICACIONES BIOMÉDICAS
- Arisbel Cerpa Naranjo 1
- Begoña Ibañez Martínez 1
- Isabel Lado Touriño 1
- Mariana P. Arce 1
- Javier Pérez Piñeiro 1
- Niurka Barrios Bermúdez 1
- María Luisa Rojas Cervantes 4
- Rodrigo Moreno Botella 3
- Sebastián Cerdán García-Esteller 2
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1
Universidad Europea de Madrid
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2
Instituto de Investigaciones Biomédicas Alberto Sols
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3
Instituto de Cerámica y Vidrio
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4
Universidad Nacional de Educación a Distancia
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Éditorial: Editora Artemis
ISSN:
ISBN:
Année de publication: 2021
Pages: 1-388–416
Type: Chapitre d'ouvrage
Résumé
The rheological behaviour of different carbon nanotubes suspensions in the dilute regime was evaluated. Suspensions of commercial multi-walled carbon nanotubes without functionalization, multi-walled carbon nanotubes oxidized in our laboratory with nitric acid under reflux for 24 hours and commercial multi-walled carbon nanotubes functionalized with carboxylic groups were studied. The study was performed in two dispersing media: water and fetal bovine serum (FBS). The results were compared with those obtained in previous work carried out for suspensions of single-walled carbon nanotubes (SWCNTs) to understand the influence of the structure of carbon nanotubes on the rheological properties when a biological medium is present. Structural characterization was performed with different techniques: XRD, IR, TGA, TEM, SEM and AFM. For the colloidal characterization, the zeta potential of the suspensions was determined at pH values between 4 and 9, our range of interest being between pH = 6-8, close to physiological pH. The measurements were done for different concentrations of suspensions (1, 1.5, 3 mg/mL) and temperature of 25, 30 and 37 °C.
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