Immobilization of amines at carbon fiber surfaces

Daniel Buttry, Jimmy C M Peng, Jean Baptise Donnet, Serge Rebouillat

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

The reaction between amines acting as nucleophiles and the C=C bonds on the carbon fiber surface acting as electrophilic vinyl groups has not yet been explored. In this contribution it is demonstrated that both thermal reactions and electrochemical oxidation of amines at carbon fibers allow the covalent bonding of these molecules directly to the carbon fiber surface, presumably via nucleophilic attack of the amine at electrophilic C=C sites at the surface and subsequent formation of C-N bonds between the surface and the amine. A novel strategy for a quantitative assay of the number of amines attached to the surface is developed in which Fe(CN)63- is electrostatically bound to the protonated, cationic amine sites, followed by electrochemical determination of the amount of bound Fe(CN)63- as a function of its concentration in solution. Analysis of the isotherm for this electrostatic binding process then provides a measure of the number of interfacially immobilized amines. The composition of the amine layer is also probed using X-ray photoelectron spectroscopy (XPS). Mechanisms are discussed by which attachment of amines at the electrophilic vinyl groups of the carbon fibers can occur. The likely influence that this type of reaction has on the interfacial shear strength in carbon fiber/epoxy composite materials is also discussed.

Original languageEnglish (US)
Pages (from-to)1929-1940
Number of pages12
JournalCarbon
Volume37
Issue number12
StatePublished - 1999
Externally publishedYes

Fingerprint

Carbon fibers
Amines
carbon fiber
Nucleophiles
Electrochemical oxidation
Shear strength
Isotherms
Electrostatics
Assays
X ray photoelectron spectroscopy
Molecules
Composite materials
Chemical analysis

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Buttry, D., Peng, J. C. M., Donnet, J. B., & Rebouillat, S. (1999). Immobilization of amines at carbon fiber surfaces. Carbon, 37(12), 1929-1940.

Immobilization of amines at carbon fiber surfaces. / Buttry, Daniel; Peng, Jimmy C M; Donnet, Jean Baptise; Rebouillat, Serge.

In: Carbon, Vol. 37, No. 12, 1999, p. 1929-1940.

Research output: Contribution to journalArticle

Buttry, D, Peng, JCM, Donnet, JB & Rebouillat, S 1999, 'Immobilization of amines at carbon fiber surfaces', Carbon, vol. 37, no. 12, pp. 1929-1940.
Buttry D, Peng JCM, Donnet JB, Rebouillat S. Immobilization of amines at carbon fiber surfaces. Carbon. 1999;37(12):1929-1940.
Buttry, Daniel ; Peng, Jimmy C M ; Donnet, Jean Baptise ; Rebouillat, Serge. / Immobilization of amines at carbon fiber surfaces. In: Carbon. 1999 ; Vol. 37, No. 12. pp. 1929-1940.
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