Hello,
I am conducting experiments in which I electrodeposit nickel onto pure Fe substrates and then polymerize polyaniline, followed by observation with optical microscopy (OM). The attached images show my sample and the corresponding OM photographs.
I would like to ask two questions:
Thank you very much for your guidance.
Rapid drying with hot air creates capillary force within the pores. The solvent evaporates quickly, leaving a high surface tension.
If you want to dry without nitrogen, replace the solvent after polymerization. Wash first with DI, then gradually switch to ethanol, which has a lower surface tension than water, or hexane, which has a lower surface tension, until the surface tension decreases.
Then, use a vacuum oven at a low temperature to reduce the evaporation rate.
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