This morning I did an experiment starting from the question: could we make bubble foil from a kombucha scoby? I had fun doing this as it kind of reacted crazy at one point. I wanted to share the results so far with you. If anyone knows alternative substances or reactions that create similar results, or has tried this in a different way, feel free to share your experiences.
What I did
I dripped hydrogen peroxide (2 and 20 microliter) on some scoby leftovers.Two were very thin (one paperlike and another more leatherlike), and two rather thick and flexible (both leatherlike). One of the thick pieces was a wallet experiment gone wrong, of which I thought the metal was brass (which is water resistant), but it appeared to be a ferro metal and the oxide made the scoby deep black and more paperlike around that part.
What's supposed to happen
Hydrogen peroxide is being divided into water and oxygen by enzymes, such as those present inside the yeast of the scoby. The water evaporates, and some exygen gets trapped inside the scoby cellulose, thereby creating bubbles. Therefore I expected the darkest scoby pieces to react more. Also I didn't know if the super thin scoby would react as there is less material for the oxygen to be caught in.
What actually happened
The thin light one didn't seem to react much at all. But after a while it became more 'clean' and transparent.
The thin dark one reacted very instantly and started sparkling straight away, still didn't create bubbles in the end.
The thick pieces started losing colour straight away, but the reaction wasn't as aggressive as with the thin dark one. Only where the oxide was from the metal, it reacted very fast en exothermic and even created smoke (which also was kind of cool:grin:). This resulted in very big bubbles in the neighbouring parts, but less so at the oxide parts. Last but not least, the small (2 microliter) drops didn't create much bubble as compared to the 20 microliter drops, which did create quite a relief.