I made KNN nanofibers, using recipe is TCD 5cm, Voltage 11kV, flow rate 0.75ml/h, around 22.6 degrees, and 16%hum.
But, the rainy season is coming, RH became 28 degrees and 45%hum.
When I tried to make electrospun same KNN solution with the same electrospinning condition, nanofibers were solidified early and hanged on the collector as seen in picture..
I tried changing Voltage to 7~11kV and TCD to 3~5cm, but the results were same..
How can i solve this problem..? I can't wait untill the rainy season is over.. and I can't change solution's concentration..
My proposal is to focus on reducing humidity, temperature is probably less of a concern. you could buy/use dehumidifier. Another simple method to dry the air by purging the spinner chamber with dry air or nitrogen from e.g. gas-cylinders.
if nothing works good enough, you could collect on a rotating target. You will/might still get different fibers, but you could collect continuously.
Humidity can discharge your jet, so additionally to what Marc Simonet proposed above, I would also try increasing the voltage instead of decreasing it.
it's mainly depends on solvent system. which type of solvent system you used for preparation of electrospun solution..?
Praveen Kumar I used 2-MOE and acetylacetone.
Does the kind of solvelts affects to electrospinning condition..? Why..?
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