Interest of NH3 and N2 plasmas for polymer surface treatment before “electroless” metallization |
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Authors: | M. Alami M. Charbonnier M. Romand |
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Affiliation: | (1) Laboratoire de Sciences et Inǵenierie des Surfaces (CNRS, ERS 069), Université Claude Bernard-Lyon 1, 43, Boulevard du 11 November 1918, 69622 Villeurbanne Cedex, France |
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Abstract: | The electroless metallization of polymers needs an activation of their surface which consists of palladium chemisorption. In this study, the effect of surface treatments of polystyrene and polyamide substrates by reactive gas plasmas (O2, NH3, N2) has been followed by XPS analysis. According to the functional groups grafted on the surface, specific chemisorption reactions can occur. The latter have been highlighted through a comparative investigation of two activation processes, viz. a conventional way using successively SnCl2 and PdCl2 solutions and a new procedure, developed by the authors, using only a PdCl2 solution. This work shows that this simplified process can be extended to any polymer whose surface is grafted with nitrogenated functions. |
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Keywords: | Palladium chemisorption catalytic activation plasma polymer treatments polymer metallization electroless metallization |
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