The adhesion between metals and polymers has attracted much interest in recent years due to the increasing use of metal/polymer assemblies, for example, in the fields of packaging, architecture, and automotive manufacturing. Among the parameters controlling the adhesion properties of metal/polymer systems, the acid‐base properties of both materials appear to play an important role. Two methods are proposed for assessing and quantifying the acido‐basicity of passive films on metals: X‐ray photoelectron spectroscopy (XPS) and X‐ray absorption near edge structure (XANES). These techniques were used here to characterize the acid‐base properties of a large set of passivated aluminum surfaces. Both XPS‐monitored Fermi level shift and XANES formic acid and pyridine adsorption measurements were found in good agreement in the establishment of a relative basicity scale for the studied surfaces. Moreover, the results were cross‐validated with those of the novel photoelectrochemical approach to the acid‐base properties of aluminum surfaces presented in Part I.
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Lopez et al. (1998) studied this question.