Accession Number : ADA192274

Title :   An IETS (Inelastic Electron Tunneling Spectroscopy) Study of Surface Reactions Applicable to Adhesion.

Descriptive Note : Technical rept.,

Corporate Author : AKRON UNIV OH INST OF POLYMER SCIENCE

Personal Author(s) : Henriksen, P N ; Gent, A N ; Ramsier, R D ; Alexander, J D

PDF Url : ADA192274

Report Date : Mar 1988

Pagination or Media Count : 30

Abstract : Inelastic electron tunneling spectroscopy (IETS) has been used to study two classes of adhesion promoting compounds adsorbed on alumina: trialkoxysilanes and phosphonic acids. It has been shown that both types of compounds can condense directly with hydroxyl groups on the surface. Condensation is through the alkoxy groups in the case of the silanes and through the hydroxyl groups in case of the acids. The silanes can further condense to form surface siloxanes. The absence of bands characteristic of the phosphoryl group in the spectra of the acids is indicative of resonance bond formation followed by ionic bonding to the surface. Keywords: Adhesion, Aluminum, Bonding, Coupling agents, Corrosion inhibitors, Phosphonic acids, Silanes, Spectroscopy, Surface reactions.

Descriptors :   *ADHESION, *ALKOXY RADICALS, *PHOSPHONIC ACIDS, *SILANES, ACIDS, ADSORPTION, ALUMINUM OXIDES, BONDING, CONDENSATION, ELASTIC PROPERTIES, ELECTRON SPECTROSCOPY, HYDROXYL RADICALS, SILOXANES, SPECTRA, SURFACE REACTIONS, SURFACES, TUNNELING(ELECTRONICS)

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE