A novel starch-graft-polyacrylamide/clay superabsorbent composite is synthe
sized by graft copolymerization reaction of acrylamide, potato starch and c
lay mineral micropowder, followed by hydrolysis with sodium hydroxide. The
water absorbency of the composite reaches 4000 g H2O/g. The influence of ki
nd and amounts of clay and of the crosslinker in the composite on the absor
bent properties is discussed in this paper.