Synthesis, characterization and swelling behavior of superabsorbent wheat straw graft copolymers

► Synthesis with wheat straw directly, without intermediate. ► The product was prepared from wheat straw - an agricultural solid waste. ► The product was an amphiprotic and environmental friendly material. ► The material has a good deswelling capacity as well as swelling. ► Study the character from the swelling and deswelling behavior simultaneously.