Swelling of hydrogels in nonaqueous media

Copolymeric hydrogel systems based on acrylamide, acrylic acid, and acrylon itrile characterized by anomalous swelling in a number of organic solvents (especially in dimethyl sulfoxide) are synthesized. The results obtained co rrespond to the Hildebrand-Gee theory. The developed hydrogel systems can b e used for the transdermal transport of water-insoluble drug preparations.