Oxidized Nanocarbons, mainly regarding Graphite Oxide (GO) and Oxidized Carbon Black (oCB) are 2D carbon nanostructures containing many hydrophilic groups, making them promising in many potential applications. In particular, GO and oCB has recently been used both as catalyst for important organic reactions (1-4) and as filler of polymers (5-7). The first part of the contributes will describe preparation and use of oxidized nanocarbons, their ability to catalyze some important reactions and how this catalytic activity can be technologically relevant for polymeric matrices, mainly regarding epoxide and phenolic resins. The second part of the contribution will be devoted to the incorporation of carbon nanofillers in several commercial biodegradable polyesters. In particular in this study we will show that the incorporation of oxidized nanocarbons induce polymer degradation during melt processing. On the contrary, their covalent functionalization minimizes polymer degradation in melt processing, thus allowing the production of polyesters/graphite-based nanocomposites. Furthermore, a nucleation effect was observed able to increase the crystallization kinetic ten times more than the usual filler. We carried out functionalization of GO (fG) and oCB (fG) by introduction of alkyl groups by a wellknown methodology (8) and acetyl groups by a new green procedure (9).With both functionalizations, improved melt stability and faster crystallization kinetic were achieved

New Application of Oxidized Nanocarbons: from Catalysis to Nanocomposites”

Maria Rosaria Acocella
Writing – Original Draft Preparation
;
Roberto Pantani
Supervision
;
2017-01-01

Abstract

Oxidized Nanocarbons, mainly regarding Graphite Oxide (GO) and Oxidized Carbon Black (oCB) are 2D carbon nanostructures containing many hydrophilic groups, making them promising in many potential applications. In particular, GO and oCB has recently been used both as catalyst for important organic reactions (1-4) and as filler of polymers (5-7). The first part of the contributes will describe preparation and use of oxidized nanocarbons, their ability to catalyze some important reactions and how this catalytic activity can be technologically relevant for polymeric matrices, mainly regarding epoxide and phenolic resins. The second part of the contribution will be devoted to the incorporation of carbon nanofillers in several commercial biodegradable polyesters. In particular in this study we will show that the incorporation of oxidized nanocarbons induce polymer degradation during melt processing. On the contrary, their covalent functionalization minimizes polymer degradation in melt processing, thus allowing the production of polyesters/graphite-based nanocomposites. Furthermore, a nucleation effect was observed able to increase the crystallization kinetic ten times more than the usual filler. We carried out functionalization of GO (fG) and oCB (fG) by introduction of alkyl groups by a wellknown methodology (8) and acetyl groups by a new green procedure (9).With both functionalizations, improved melt stability and faster crystallization kinetic were achieved
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4778850
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