Abstract
An electrochemical method for probing the metal/polymer bond in which an electrolessly-metallized polymer substrate is utilized as the cathode in an electrolysis cell is described (cathodic charging). Cathodic charging is employed to delineate the mechanical and chemical portions of metal/polymer adhesion. The effects of electrolyte composition, current, area, time, metal, metal thickness, polymer fillers, and polymer pretreatment on charging are detailed. The results are consistent with diffusion of an electrochemicallygenerated reductant to the metal/polymer interface and its subsequent reaction with the chemical aspect of the metal/polymer bond. The data indicate that for the polyetherimide substrates studied, and deposition of either an electroless copper or nickel coating, approximately 18 g/mm of mechanical adhesion is required to avoid delamination during the electroless plating sequence. The mechanical adhesion component can be supplemented by physical or chemical means.
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Karas, B.R., Foust, D.F. (1992). An Electrochemical Means of Probing a Metal/Polymer Interface— a Method for Deducing Mechanical and Chemical Adhesion Components. In: Mittal, K.L. (eds) Metallized Plastics 3. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3416-7_25
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DOI: https://doi.org/10.1007/978-1-4615-3416-7_25
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