Study on the Preparation Technics of Acrylamide and Starch Graft Copolymer for Paper Packaging Material

The preparation technics of acrylamide and starch graft copolymer for paper packaging mate- rial was studied by using ammonium persulfate as initiator.Reaction conditions of graft copolymerization such as concentration of initiator,reaction temperature,concentration of monomer,reaction time,and gelatinized temperature were investigated.These results showed that the optimal reaction conditions were as follows:ge- latinized temperature was 80℃,concentration of monomer was 0.7mol/L,concentration of initiator was 2. 19mmol/L,reaction temperature was 60℃,reaction time was 3h,monomer and initiator were added twice.