We investigate the use of Terahertz (THz) Time Domain Spectroscopy (TDS) as a tool for the measurement of the index dispersion of multi-walled carbon nanotubes (MWCNT) in polypropylene (PP) based composites. Samples containing 0.5% by volume concentration of nonfunctionalized and functionalized carbon nanotubes are prepared by melt compounding technology. Results indicate that the THz response of the investigated nanocomposites is strongly dependent on the kind of nanotube functionalization, which in turn impacts on the level of dispersion inside the polymer matrix. We show that specific dielectric parameters such as the refractive index and the absorption coefficient measured by THz spectroscopy can be both correlated to the index of dispersion as estimated using conventional optical microscopy.

Dispersion of carbon nanotubes in melt compounded polypropylene based composites investigated by THz Spectroscopy / Casini, R.; Papari, G.; Andreone, A.; Marrazzo, D.; Patti, A.; Russo, P.. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 23:14(2015), pp. 18181-18192. [10.1364/OE.23.018181]

Dispersion of carbon nanotubes in melt compounded polypropylene based composites investigated by THz Spectroscopy

Casini R.;Papari G.;Andreone A.
;
Patti A.;Russo P.
2015

Abstract

We investigate the use of Terahertz (THz) Time Domain Spectroscopy (TDS) as a tool for the measurement of the index dispersion of multi-walled carbon nanotubes (MWCNT) in polypropylene (PP) based composites. Samples containing 0.5% by volume concentration of nonfunctionalized and functionalized carbon nanotubes are prepared by melt compounding technology. Results indicate that the THz response of the investigated nanocomposites is strongly dependent on the kind of nanotube functionalization, which in turn impacts on the level of dispersion inside the polymer matrix. We show that specific dielectric parameters such as the refractive index and the absorption coefficient measured by THz spectroscopy can be both correlated to the index of dispersion as estimated using conventional optical microscopy.
2015
Dispersion of carbon nanotubes in melt compounded polypropylene based composites investigated by THz Spectroscopy / Casini, R.; Papari, G.; Andreone, A.; Marrazzo, D.; Patti, A.; Russo, P.. - In: OPTICS EXPRESS. - ISSN 1094-4087. - 23:14(2015), pp. 18181-18192. [10.1364/OE.23.018181]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/907641
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 13
social impact