I have tried several time for casting a membrane polymer in NMP solvent over hot air oven and hot plate for making membrane thin film but every time I failed to make it,it form a sticky gel like one instead of film.What could be the problem ,is there any alternative method available for this.
I prepared the polymeric membrane for the fuel cell. What I know in the casting of the polymeric membrane, is that temperature can play a major role in casting a membrane. Try to increase the temperature during casting in the oven. One more thing you didn't mention the time and temperature. How long did you keep the membrane for casting in the oven?
Usually I set the temperature at 75 degree Celsius for 24 hrs but every time iam getting either a hard layer or sticky,when try to detach it come out as powder instead of flexible membrane @zaib
Dear collegue,
First ,you should the type of your membrain material ,and what is the degradation temprature of this material also must be take TGA and DSC thermogram for understanding about temprature behavior of membrain ?,finally you can understand which time you need to put the material in to the oven
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