I am researching in the field of gas separation membranes because of subject matter funding. I have to use a micron wet film applicator for manual coating. I applied the membrane fluid on my support membrane, but the result was always unsatisfactory because the fluidity of the cast membrane fluid was very high, and the coated wet film was not homogeneous when observed by the naked eye. I would like to ask if there are any specific tips when applying the wet film. Also, I am fixing the support film on a flat glass plate by tape.
Applying a uniform film manually using a wet film applicator can be challenging, especially with high-fluidity materials. Here are a few tips that could potentially help you improve your results:
Remember that practice is essential to develop a consistent technique, and even small adjustments can sometimes significantly impact the results. Don't be discouraged if you don't achieve perfect results right away; membrane preparation is an art as much as it is a science.
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