The swelling behaviour and elastic properties of gelatin gels are repo
rted. Ampholytic swelling properties have been investigated. Antipolye
lectrolyte performance is observed when gels are swollen in different
salt solutions. Swelling behaviour in high salt solutions is different
from that in low salt solutions; this may be attributed to the format
ion of ion pairs. The elastic properties of the gel and their relation
ship with swelling character are also discussed.