Abstract
Inverse emulsion graft copolymerization of chitosan and acrylamide monomer under microwave radiation was studied. It was shown that when the microwave radiation power was 300W, the microwave radiation time was 150S, the volume ratio of oil phase and water phase was 1:1, the weight ratio of chitosan and AM was 1:7, the initiator concentration was 0.67mmol/L, the dosage of emulsification agent was 7% of the weight of oil phase and the weight ratio of Span-80 and OP-10 was 6:4, stable inverse latex could be gained. A good dry strengthening effect had been obtained by applying the above mentioned latex in wheat straw pulp as the strengthening agent. The breaking length and tearing index of paper was respectively increased by 23.5% and 15.1% when the dosage of the graft copolymer latex was 0.6%.
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