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Polysaccharide Nanocomposites Reinforced with Graphene Oxide and Keratin-grafted Graphene Oxide

Published online by Cambridge University Press:  06 November 2013

Claramaría González ,
Ana Hernández ,
Víctor Castaño ,
Oxana Kharissova ,
Rodney Ruoff  and
Carlos Velasco-Santos
Claramaría González
Affiliation:
Universidad Autónoma de Nuevo León, Monterrey, México. Centro de Física Aplicada y Tecnología Avanzada, UNAM, Querétaro, México.
Ana Hernández
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, UNAM, Querétaro, México. Instituto Tecnológico de Querétaro, Querétaro, México.
Víctor Castaño
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, UNAM, Querétaro, México.
Oxana Kharissova
Affiliation:
Universidad Autónoma de Nuevo León, Monterrey, México.
Rodney Ruoff
Affiliation:
The University of Texas at Austin, USA.
Carlos Velasco-Santos
Affiliation:
Centro de Física Aplicada y Tecnología Avanzada, UNAM, Querétaro, México. Instituto Tecnológico de Querétaro, Querétaro, México.
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Abstract

Nanocomposites of polysaccharide matrices, chitosan-starch and carboxymethyl cellulose-starch reinforced with graphene oxide and graphene grafted with keratin were developed. Composites films had been prepared for the casting/solvent evaporation method. The nanocomposites of chitosan/starch matrix improved substantially their mechanical properties with respect to the film without reinforcing, obtaining an increase of 929 % in the storage modulus (E’ 35°C) with only 0.5 wt% of graphene oxide and outstanding increments in E’ at 150°C and 200°C when keratin grafted graphene oxide is incorporated (0.1 wt%). In contrast, the graphene oxide incorporated into the carboxymethyl cellulose-starch matrix tends to decrease the stiffness of the film behaving in opposite way to nanocomposite of chitosan/starch matrix.

Keywords

nanostructurecompositescanning electron microscopy (SEM)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1453: Symposium GG – Functional Hybrid Nanoparticles and Capsules with Engineered Structures and Properties , 2012 , mrss12-1453-gg09-20
Copyright
Copyright © Materials Research Society 2013 

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