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Polymers 2017, 9(4), 133; doi:10.3390/polym9040133

Catalytic Activity of Oxidized Carbon Black and Graphene Oxide for the Crosslinking of Epoxy Resins

1
Dipartimento di Chimica e Biologia e Unità di Ricerca INSTM, Università di Salerno, 84084 Fisciano (SA), Italy
2
Dipartimento di Ingegneria dell’Innovazione, Università del Salento, 73100 Lecce, Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Walter Remo Caseri
Received: 28 February 2017 / Revised: 30 March 2017 / Accepted: 3 April 2017 / Published: 7 April 2017
(This article belongs to the Special Issue Nanocomposites of Polymers and Inorganic Particles 2016)
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Abstract

This article compares the catalytic activities of oxidized carbon black (oCB) and graphene oxide (eGO) samples on the kinetics of a reaction of diglycidyl ether of bisphenol A (DGEBA) with a diamine, leading to crosslinked insoluble networks. The study is mainly conducted by rheometry and Differential Scanning Calorimetry (DSC). Following the same oxidation procedure, CB samples are more efficiently oxidized than graphite samples. For instance, CB and graphite samples with high specific surface areas (151 and 308 m2/g), as oxidized by the Hummers’ method, exhibit O/C wt/wt ratios of 0.91 and 0.62, respectively. Due to the higher oxidation levels, these oCB samples exhibit a higher catalytic activity toward the curing of epoxy resins than fully exfoliated graphene oxide. View Full-Text
Keywords: carbon black oxidation; Differential Scanning Calorimetry; gel time carbon black oxidation; Differential Scanning Calorimetry; gel time
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Acocella, M.R.; Esposito Corcione, C.; Giuri, A.; Maggio, M.; Guerra, G.; Maffezzoli, A. Catalytic Activity of Oxidized Carbon Black and Graphene Oxide for the Crosslinking of Epoxy Resins. Polymers 2017, 9, 133.

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