Abstract
The competitive adsorption behavior between oxygen- and nitrogen-containing functionality in poly(methyl methacrylate-co-2-vinylpyridine) (MMA2VP) and poly(methyl methacrylate-co-4-vinylpyridine) (MMA4VP) random copolymers onto alumina substrate was investigated. The adhesive strength of both the MMA2VP/alumina and MMA4VP/alumina systems increased with increasing vinylpyridine (VP) content in the copolymers, and the effect was more prominent for the MMA4VP/alumina system. Analysis of the reflection−absorption infrared spectroscopy shows that the carbonyl functional groups in MMA2VP and MMA4VP interact specifically with alumina while the pyridine rings in VP units are oriented more vertically to alumina surface than carbonyl groups. Results from X-ray photoelectron spectroscopy (XPS) reveal that both the nitrogen-containing functionalities in 2VP or 4VP units and the oxygen-containing functionality in MMA unit interact specifically with alumina surface. The quantitative analysis of XPS spectra indicates th...
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