Well, I need to cast the polymer since I have to cut to the pieces and scan them later using Near Infrared Specs. NIRS technique is very thickness sensitive, even a difference of 1 micrometer is significant. Dip coating would not be an option since I need to cut and remove the film for farther...
I need to cast my Eudragit (Polyacrylate) copolymer for NIR spectroscopy. Critical point: I need very constant thickness in all part of the cast. I tried several times using PTFE casting dish. It seems as the polymer is drying (at room temperature) the middle part of the cast become thicker than...
