Interactions of Electroless Catalysts with Plasma‐Oxidized Surfaces of Polystyrene‐Based Resins (original) (raw)

© 1989 ECS - The Electrochemical Society
Journal of The Electrochemical Society,Volume 136,Number 6Citation Andrew M. Mance et al 1989 J. Electrochem. Soc. 136 1667DOI 10.1149/1.2096990

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1945-7111/136/6/1667

Abstract

The way in which chemically modified polymer surfaces (substrates) affect the activity of electroless catalysts was examined. Surfaces of three injection‐molded styrene containing polymers [polystyrene (PS), poly(styrene‐acrylonitrile) (SAN), and poly(acrylonitrile‐butadiene‐styrene) (ABS)] were modified by either plasma oxidation or by plasma oxidation followed by immersion in sodium hydroxide solution. After modification, two palladium catalyst systems (a two‐step palladium catalyst and a commercial colloid catalyst) and six electroless baths were tested for activity in combinations with these surfaces. The activities of the two catalysts vary unpredictably and differently as the polymer, surface treatment, and electroless bath are changed. X‐ray photoelectron spectroscopy results show only a weak correlation between surface composition and platability: (i) plasma‐treated polymers show a net increase in surface oxygen, present mostly as carbonyl, (ii) immersing the plasma‐exposed surfaces in alkaline solutions lowers oxygen and carbonyl concentrations. Some of these results differ from those previously obtained with photo‐oxidized surfaces.

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