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Photo-initiation synthesis and flocculation property of cationic PAM flocculant

Nie Rong-chun

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Abstract

Acrylamide(AM) and dimethyl dially ammonium chloride(DMDAAC) were used as monomers to synthesize flocculant of cation-polyacrylamide(CPAM) by photo-initiation method.Effecting factors of CPAM photo-initiation system were studied and property of copolymer was examined and its structure was characterized.Flocculating effect of CPAM on coal slurry was studied.The result shows it is available to synthesize CPAM by photo-initiation method.The optimal craft conditions are that the bulk concentration of monomer is 20 %,mol ratio of DMDAAC and AM is 1∶3～ 1∶4,dosage of photo-initiator is 0.037 %～0.075 % of monomer mass.Intrinsic viscosity number of synthesized CPAM is 750 mL/g,and cationization of synthesized CPAM is 12 %.Flocculating effect of CPAM on coal slurry is superior to polyacrylamide,especially for the difficult setting coal slurry which is rich in fine fraction and kaolin.

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Acrylamide(AM) and dimethyl dially ammonium chloride(DMDAAC) were used as monomers to synthesize flocculant of cation-polyacrylamide(CPAM) by photo-initiation method.Effecting factors of CPAM photo-initiation system were studied and property of copolymer was examined and its structure was characterized.Flocculating effect of CPAM on coal slurry was studied.The result shows it is available to synthesize CPAM by photo-initiation method.The optimal craft conditions are that the bulk concentration of monomer is 20 %,mol ratio of DMDAAC and AM is 1∶3～ 1∶4,dosage of photo-initiator is 0.037 %～0.075 % of monomer mass.Intrinsic viscosity number of synthesized CPAM is 750 mL/g,and cationization of synthesized CPAM is 12 %.Flocculating effect of CPAM on coal slurry is superior to polyacrylamide,especially for the difficult setting coal slurry which is rich in fine fraction and kaolin.

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Available abstract

Acrylamide(AM) and dimethyl dially ammonium chloride(DMDAAC) were used as monomers to synthesize flocculant of cation-polyacrylamide(CPAM) by photo-initiation method.Effecting factors of CPAM photo-initiation system were studied and property of copolymer was examined and its structure was characterized.Flocculating effect of CPAM on coal slurry was studied.The result shows it is available to synthesize CPAM by photo-initiation method.The optimal craft conditions are that the bulk concentration of monomer is 20 %,mol ratio of DMDAAC and AM is 1∶3～ 1∶4,dosage of photo-initiator is 0.037 %～0.075 % of monomer mass.Intrinsic viscosity number of synthesized CPAM is 750 mL/g,and cationization of synthesized CPAM is 12 %.Flocculating effect of CPAM on coal slurry is superior to polyacrylamide,especially for the difficult setting coal slurry which is rich in fine fraction and kaolin.

Key concepts: Polyacrylamide, Flocculation, Cationic polymerization, Monomer, Ammonium chloride, Acrylamide, Copolymer, Chemical engineering

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