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Graphene sheet (GS) is functionalized with chitosan via a click coupling between azide-functionalized chitosan and alkynyl-decorated graphene oxide. The coupling is confirmed by Fourier transform infrared and X-ray photoelectron spectroscopy, and the complete exfoliation of GS in the chitosan matrix is confirmed by X-ray diffraction measurements. With the addition of a small amount of the click coupled...
Nanocomposites of chitosan are produced using graphene sulphonic acid (SG) at five different compositions and are designated as SG0.5, SG0.75, SG1, SG3 and SG5; the numbers indicate weight percent of SG. The TEM & AFM micrographs indicate that the SG sheets are in exfoliated state. The thermal stability and the storage modulus of the composites increase with increasing SG concentration showing...
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