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Open AccessArticle

Preparation and Characterization of EG-Chitosan Nanocomposites via Direct Exfoliation: A Green Methodology

Department of Engineering for Innovation, University of Salento, Via Monteroni, km 1, 73100 Lecce, Italy
Institute of Polymers, Composites and Biomaterials (IPCB), National Research Council of Italy Mostra d’Oltremare Pad.20, Viale Kennedy 54, 80125 Naples, Italy
Author to whom correspondence should be addressed.
Academic Editor: Frank Wiesbrock
Polymers 2015, 7(12), 2584-2594;
Received: 26 October 2015 / Revised: 18 November 2015 / Accepted: 1 December 2015 / Published: 9 December 2015
(This article belongs to the Collection Polysaccharides)
PDF [2594 KB, uploaded 9 December 2015]


In this study, free-standing expanded graphite chitosan (EG-chitosan) nanocomposite films have been prepared using a novel green and simple preparation method, starting from a commercial expandable graphite (GIC). The in situ exfoliation of GIC by a solvent-free sonication method was monitored as a function of the process parameters using X-ray diffraction (XRD), transmission electron microscopy (TEM), dynamic light scattering (DLS) and UV-visible transmittance (UV-VIS) analyses. The optimal process parameters were selected in order to obtain an efficient dispersion of EG in chitosan solutions. The effective EG amount after the in situ exfoliation was also determined by thermogravimetric analyses. View Full-Text
Keywords: nanocomposites; chitosan; graphite; green direct exfoliation nanocomposites; chitosan; graphite; green direct exfoliation

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Demitri, C.; Moscatello, A.; Giuri, A.; Raucci, M.G.; Esposito Corcione, C. Preparation and Characterization of EG-Chitosan Nanocomposites via Direct Exfoliation: A Green Methodology. Polymers 2015, 7, 2584-2594.

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