| abstract |
The invention discloses a method for preparing a sodium chlorite hydrogel, comprising the following steps: S1, configuration of a hydrogel solution: configuring an aqueous solution of acrylamide with a concentration of 3-5mol/L; S2, graft copolymerization: in At 10-30°C, adding potassium persulfate and N,N-methylenebisacrylamide to the obtained aqueous acrylamide solution while stirring, and stirring for 30-40min, wherein acrylamide, potassium persulfate and N,N The mass ratio of methylenebisacrylamide is (300-400): 1: (1.7-2); S3, the formation of sodium chlorite hydrogel: the solution after the reaction is heated at 50-70 ℃ for 0.5 ‑1.5 hours to obtain a hydrogel, put the hydrogel into a sodium chlorite solution after drying, and wait for the gel to absorb and swell in an opaque environment to form a sodium chlorite hydrogel. The preparation method provided by the invention has convenient operation and simple production, and prepares a sodium chlorite hydrogel with high transparency, strong adsorption capacity and strong anti-oxidation capacity, which has a good absorption effect on ultraviolet light. |