Synthesis and Decolorization Performance of Amphiphilic Polymer P(AM-AA-AN)-g-TETA
Amphoteric polymer P(AM-AA-AN)-g-TETA decolorizer was synthesized by random copolymerization of acrylamide(AM),acrylic acid(AA)and acrylonitrile(AN)in aqueous solution with triethylenetetramine(TETA)and ammonium chloride as modifiers.The functional group structure,molecular weight and distribution of the amphoteric polymer were characterized using FT-IR and GPC.The effects of amphoteric polymer dosage,water pH and sodium chloride concentration on decolorization were studied,using reactive red and reactive yellow as simulated dyes.When the dosage of the amphoteric polymer is 200 mg/L,the decolorization rate exceeds 80%.The decolorization performance is better under neutral and acidic conditions,but lower under alkaline conditions.With the increase of sodium chloride concentration,the decolorization effect tends to decrease.Compared with the decolorizing agent on the market,the decolorizing effect of active yellow is significantly improved,and it has a certain application prospect.
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