Dynamic swelling behavior of polyacrylamide based three component hydrogels

Three component polymeric thydrogels with greater water sorption properties were prepared of polyacrylamide, poly-vinyl-pyrrolidone, and gelatin by cr osslinked polymerization method. The water uptake by hydrogel was greatly d ependent on the composition of the hydrogel and external stimuli such as th e presence of electrolytes and temperature of the system. The dynamics of t he sorption process was investigated and found to be Fickian controlled. Th e hydrogels prepared were found to exhibit high antithrombogenic property t han that possessed by the glass surface.