Emulsion Separating for Paper

Hi. I have a few Polaroid emulsion lifts that I made last year, and the emulsion is starting to separate away from the paper. The emulsion is kind of brittle, but not so bad that it's breaking apart or cracking from gentle handling. I'm looking for a way to re-adhere it to the paper (thick watercolor paper in this case) without it being too noticeable. These are Spectra size pieces (roughly 3x4).

Any ideas? Thanks.

What about Mod Podge?

I've used mod podge to stick polaroid lifts to watercolor paper before and I think they're still stuck. I don't think they've yellowed, either, and it was probably around 10 years ago that I did them. If I find them in my cleaning of my craft room, I'll let you know.

dipping the polaroid in gum arabic may work it gives a nice layer on watercolour almost strengthens the paper.