Crosslinking Modification and Performance Study of Oxidized Starch Adhesive

A new crosslinking modification oxidized starch adhesive was prepared using corn starch and ammonium persulfate as main materials,and crosslinking with dimethylol dicyandiamide(DMDCD).The product was characterized by FT-IR.The water resistance and storage stability of the crosslinking modification oxidized starch adhesive were also discussed.The results showed that DMDCD improves the water resistance and storage stability of oxidized starch adhesive;when the amount of ammonium persulfate is 1.5% of corn starch by mass,the amount of DMDCD is 3% of corn starch by mass,the modified starch adhesive can keep for 45 days at room temperature,and its water resistance is 102 h and its viscosity is 1680 mPa·s.FT-IR spectrum indicated that DMDCD was crosslinked with oxidized starch.