Casting polymer films by high volatile solvent evaporation
Posted 03 March 2009 - 01:22 AM
I need a little bit of advice as i am trying to find an efficient method to cast polymer films with a constant thickness by volatile solvent evaporation.
I am struggling as for the films to have constant thickness, I need just prior casting to measure the amount of polymer (which is diluted in a high volatile solvent). But this step gives me already trouble as during the process 1) bubbles for with contact with air 2) lost of polymer solution in the measurement container as the cocktail is quite viscous.
Thus, I was wondering somebody could share his/her practical tips for this normally easy step. (container, equipment he/she used)
thanks a million times for any help and advice
Posted 03 March 2009 - 06:29 AM
I hope these practical tricks help.
Posted 03 March 2009 - 07:00 PM
Posted 03 March 2009 - 10:33 PM
also to reduce the viscosity problem, I thought about simply dilute more the polymer. it will increase i guess the evaporation process, but at least i can be more precise with the polymer amount that ill be pouring.