Reversible chain association/dissociation via a CO2 responsive crosslinking/decrosslinking system

Reversible chain association/dissociation phenomenon viaCO2 responsive crosslinking/decrosslinking was detected in aqueous solutions of polyallylamine (PAA). The chain association/dissociation behavior was reversible and useful in the synthesis of porous crosslinked polystyrene, which suggested potential utility in the area of CO2-responsive separable adhesives, switches and sensors.