Improvement of Mechanical Properties of Graphene Oxide / Poly(allylamine) Composites by Chemical Crosslinking
Citation:Amro Satti, Patrick Larpent and Yurii Gun'ko, Improvement of Mechanical Properties of Graphene Oxide / Poly(allylamine) Composites by Chemical Crosslinking, Carbon, 48, 12, 2010, 3376-3381
Improvement of Mechanical Properties of Graphene Oxide-Poly (allylamine) Composites by Chemical Crosslinking.pdf (published (author's copy) - Peer Reviewed) 634.0Kb
Graphite oxide was prepared by oxidation of graphite using the Hummers method, and its ultrasonication in water yielded dispersed graphene oxide (GO) sheets. These sheets were then crosslinked with a water soluble polymer, namely poly (allylamine) hydrochloride (PAH), by cabodiimide coupling. Free standing composite films were obtained by filtration. These crosslinked composites showed better mechanical properties than unmodified GO films and those of composites that were made by simple mixing of GO and PAH. The filtration process was optimized to produce strong GO films which were subsequently crosslinked with PAH in-situ to produce very strong composites with tensile strengths up to146 MPa.
Science Foundation Ireland (SFI)
Type of material:Journal Article
Availability:Full text available
Subject (TCD):Nanoscience & Materials