Abstract
Inelastic electron tunnelling spectra have been obtained for plasma-polymerized polyvinylacetate, polyethylacrylate, polyacrylic acid, polymethylmethacrylate and polyacrylonitrile on hydrated aluminium oxide. Spectra of plasma-polymerized polyvinyl-acetate and polymethylmethacrylate are very similar to those of conventional free radical polymers. All polymers exhibit spectral peaks at about 1440 cm −1 and 1600 cm −1 which are due to the carboxylate anion, and this indicates that ester groups are cleaved on the oxide to produce ionic attractions at the interface which are advantageous for adhesive bonding.
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