Title: Copolymerization Modification of Pulp Grafted by DMC under Microwave Irradiation
Abstract: The eucalyptus pulp was grafted by cationic monomer of methacryloyloxy ethyl trimethylammonium chloride(DMC) under microwave irradiation.Effect of monomer content,crosslinking agent amount,initiator dosage,pulp consistency and microwave irradiation time on pulp grafting ratio and retention rate of the fines was investigated,and the mechanical properties of the grafted pulp and its infrared spectrum were discussed and analyzed.Results showed that the grafting ratio of the pulp and retention rate of the fine component within the pulp increase first and decrease afterwards with the increase of the mass ratio of crosslinking agent to pulp,initiator dosage,pulp consistency and irradiation time.High quality cationic pulp can be obtained under the following optimized reaction conditions,the mass ratio of monomer to pulp 0.9,initiator dosage 0.6%,the mass ratio of crosslinking to monomer agent 0.03,pulp consistency 14%,microwave irradiation time 3min.The tensile index,burst index and tear index of the paper after grafting are improved,FT-IR indicated that the cationic monomer DMC has been successfully grafted onto the eucalyptus pulp.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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