Preparation and Characterization of EG-Chitosan Nanocomposites via Direct Exfoliation: A Green MethodologyReport as inadecuate




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1

Department of Engineering for Innovation, University of Salento, Via Monteroni, km 1, 73100 Lecce, Italy

2

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

Abstract 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





Author: Christian Demitri 1,* , Anna Moscatello 1, Antonella Giuri 1, Maria Grazia Raucci 2 and Carola Esposito Corcione 1

Source: http://mdpi.com/



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