Functionalization of Carbon Materials

概要

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To modify chemically the surface of carbon materials, such as carbon black, graphite powder, carbon fiber, and carbon whisker (vapor-growth carbon fiber), the incorporation of functional groups onto these surface was reviewed.<BR>Carbon materials having reactive groups such as acyl chloride, acyl azide, and active ester groups can be used for the grafting of hydroxyl- or amino-capped commercial available polymers. The grafting method by the reaction of reactive groups on carbon material with polymers enables us to control the molecular weight of grafted polymer chain.<BR>The incorporation of initiating groups such as azo, peroxyester, acylium perchlorate, and potassium carboxylate groups, onto carbon surface could be succeeded and their applications to the graft polymerization and copolymerization of various monomers were attempted to obtain polymer-grafted carbon blacks with a higher percentage of grafting.<BR>Furthermore, it was demonstrated that carbon materials, especially carbon black having much oxygen containing groups, acted as not only curing agent of urethaneprepolymer, epoxy resins, and polyfunctional spiro ortho ester resins but also electron transfer catalyst of two-phase systems (aqueous-organic phase) in dehydrogenation of hydrazo nitriles.
炭素材料学会の論文