Currently I am conducting research on the manufacture of anion exchange membrane fuel cells with QPVA:PDDA modified alumina nanoparticles. However, when homogenizing the polymer with alumina nanoparticles with an ultrasonic homogenizer with the JOANLAB brand type MHZ-01 and the huxi brand type HR-6B, the dope solution always produces foam. How to prevent the dope solution from becoming foam when homogenized?
Dear Diovan Fitra Pamuji ,
I do not know why your samples are foaming, but let me tell you what might work for your issue:
1) First, you could try to use vacuum (maybe put all in a vacuum chamber or something), so the air that is getting trapped in the foam is released.
2) There are some antifoaming agents (normally, they are low molecular weight silicone oil, non-reactive) that might help. If you search for antifoaming agents, and you can add them to your synthesis, then that might be a good alternative.
Hope some of this helps! Best of luck with that!
Diovan Fitra Pamuji
Check the pH of your solution. It should be acidic due to the hydrolysis of aluminum oxide. Add a little alkali to shift the equilibrium during hydrolysis.
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