hydrogel
Superabsorbent polyacrylamide = cross-linked acrylic copolymer
starch-grafting: coat acrylonitrile polymer onto the backbone of starch molecules = “Super Slurper”
Polyacrylate/polyacrylamide copolymers for handling electrolytes & minerals and long term stability
I don't know. It sounds like there are many kinds of hydrogels, but I haven't seen "desiccant" listed as an application yet. Things like spill control, yes.
>> hydrogel crystals can absorb water vapor on days of high humidity
And some have been used to SENSE humidity, but it sounds like they only work above 40% RH.
http://iopscience.iop.org/0957...
Experiment shows that the hydrogel-coated LPG sensor is highly sensitive between 38.9% and 100% RH,
