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  • Topic: Web-like structures of black dust in caustic liquid

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    • September 24, 2018 11:31 AM CEST
    • Stefan B.
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      Web-like structures of black dust in caustic liquid

      Hi,

      this weekend I started nano-coating copper wires and plates using the "cold caustic" method. I first made a caustic liquid using 60g NaOH, 15g KOH, 3 PET bottle necks, some pieces of aluminum foil, and 1 liter of boiled destilled water. After 2 hours the liquid had cooled down so I could use it. When I removed the lid from the PP box, I saw flakes of black dust in the liquid which had formed web-like structures which looked a bit like spider webs or a neural network in the brain. :-)

      Does anyone have an idea what this black stuff could be, and what might cause such structures?

      Stefan

      This post was edited by Stefan B. at October 3, 2018 3:35 PM CEST
    • September 27, 2018 9:15 AM CEST
    • Stefan B.
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      Magnetic Carbon?

      I also found out that these black flakes/particles in the "cold caustic" solution are magnetic:

      Could it be that the particles are carbon from the PET bottles which becomes magnetic in a nano state?

      This post was edited by Stefan B. at October 3, 2018 3:35 PM CEST
    • October 22, 2018 7:34 PM CEST
    • Danilo Candida
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      It seems to me more like the byproduct of Aluminium in Caustic, which may present magnetic attraction.

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