I have been able to get very good and reliable emulsion separation from Fuji fp100c instant film, the emulsion is nice and thick and not at all fragile.
But... the emulsion doesn't adhere well to paper and tends to peel off as it dries. Some edge peeling looks nice but ultimately one wants something with some permanence!
Any ideas? One thought I had was to hang the emulsion 'til it is completely dry and then drop it (artistically!) onto a gluey surface, but I'm not sure which glues are best for this. I think if I overcoated the emulsion on paper I'd have a bunch of bubbles. The emulsion is so thick and durable, I could actually dry mount it or something, but then it would be very flat and lifeless... my goal with these things is to convey some of the transparency whilst anchoring the thing firmly enough to mat & frame it.