Preparation and properties of superabsorbent by graft co-polymrization of acrylic acid onto different celluloses of crops stems

The different celluloses of crops stalks such as corn, cotton and wheat stem were studied by graft copolymerization with acrylic acid. Many factors, such as ratios of starch to cellulose, de-ionized water, running water and rain water, which affected the absorbency of copolymers, were researched. The copolymer prepared from cotton stem cellulose and acrylic acid can absorb de-ionized water 930 g/g, running water 670 g/g, and rain water 380 g/g. The copolymer of corn crop cellulose and sweet potato starch (3:2, mass ratio) with acrylic acid can absorb rain water 540 g/g.