Spin-coating is used for the fabrication of nanocomposite thin films, consisting of carbon nanoparticles embedded in epoxy matrix, on Mylar substrate. The final thickness of the heat-cured film was measured as a function of the spinning speed and nanoparticle concentration. Multi-walled carbon nanotubes with carboxyl functionalization (MWCNT-COOH) or exfoliated graphite nanoplatelets (xGnP) were used as fillers. Experimental results were in good agreement with the predictions from a model that considered the rheology and flow behavior of the reinforced resin fluids on a rotating disk. The model was differentiated for Newtonian and non-Newtonian regime of the spinning polymer fluid. In case of non-Newtonian behavior of the epoxy resin at high particle concentrations, a semi-empirical approach was used to determine the model constants from rheology measurements. Results from this analysis also indicate how rheological and wetting properties of the nano-reinforced polymer fluids depend on the aspect ratio of the graphene nanoplatelets.

Fabrication of carbon-based nanocomposite films by spin-coating process: An experimental and modeling study of the film thickness / Clausi, Marialaura; Santonicola, Mariagabriella; Laurenzi, Susanna. - In: COMPOSITES. PART A: APPLIED SCIENCE AND MANUFACTURING. - ISSN 1359-835X. - STAMPA. - 88:(2016), pp. 86-97. [10.1016/j.compositesa.2016.05.026]

Fabrication of carbon-based nanocomposite films by spin-coating process: An experimental and modeling study of the film thickness

CLAUSI, MARIALAURA;SANTONICOLA, MARIAGABRIELLA;LAURENZI, SUSANNA
2016

Abstract

Spin-coating is used for the fabrication of nanocomposite thin films, consisting of carbon nanoparticles embedded in epoxy matrix, on Mylar substrate. The final thickness of the heat-cured film was measured as a function of the spinning speed and nanoparticle concentration. Multi-walled carbon nanotubes with carboxyl functionalization (MWCNT-COOH) or exfoliated graphite nanoplatelets (xGnP) were used as fillers. Experimental results were in good agreement with the predictions from a model that considered the rheology and flow behavior of the reinforced resin fluids on a rotating disk. The model was differentiated for Newtonian and non-Newtonian regime of the spinning polymer fluid. In case of non-Newtonian behavior of the epoxy resin at high particle concentrations, a semi-empirical approach was used to determine the model constants from rheology measurements. Results from this analysis also indicate how rheological and wetting properties of the nano-reinforced polymer fluids depend on the aspect ratio of the graphene nanoplatelets.
2016
Multifunctional composites, Nanocomposites, Viscosity, Process modeling, Spin-coating
01 Pubblicazione su rivista::01a Articolo in rivista
Fabrication of carbon-based nanocomposite films by spin-coating process: An experimental and modeling study of the film thickness / Clausi, Marialaura; Santonicola, Mariagabriella; Laurenzi, Susanna. - In: COMPOSITES. PART A: APPLIED SCIENCE AND MANUFACTURING. - ISSN 1359-835X. - STAMPA. - 88:(2016), pp. 86-97. [10.1016/j.compositesa.2016.05.026]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/874280
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