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Method of analysis for Palladium activator solution for plating on ABS?
January 8, 2009
Hello, I'm student of chemical engineering, and my thesis topic is about ELECTROPLATING ON ABS. I use a solution of PdCl2, SnCl2 and HCl as catalyst before Electroless Ni. But I don't know how control this Bath... which is the best method of analysis for stabilize the solution?
I hope you could help me!
Thank YOU
Student - Bogotá
You're not saying that the SnCl2 and the PdCl2 get mixed together? When I used to play around with EN plating, they were used in separate, successive steps.
The PdCl2 solution is not so concentrated that, especially if you are making it up on a lab scale, you can't just make it fresh each time. If you are determined to analyze for it, there are two gravimetric methods that I know of: in one, you reduce the Pd to the metal with formic acid; in the other, you precipitate it with dimethylglyoxime. I am sorry, but I don't have any more details about either method.
Dave Wichern
Consultant - The Bronx, New York
January 14, 2009
January 22, 2009
Hi,
You can analyze the Pd concentration by taking a sample, adding 1:1 HCl, a little hydrogen peroxide and heating it for 20mins. Dilute it to volume and run it on either an AAS
⇦ on
eBay
or
Amazon [affil links] or ICP. Your sample size and dilution factor will depend on the concentration of your bath.
Hope this helps.
- Pomona, California, USA
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