Use of ammonium persulfate in polymerization

Ammonium Persulfate (APS) is an important chemical raw material, because of its strong oxidation and has a wide range of applications in many industries. It is mainly used as a polymerization initiator, especially in the polymerization or copolymerization process of tetrafluoroethylene polymerization, acrylic acid and its esters, acrylamide, vinyl acetate and other water-soluble monomers

Tetrafluoroethylene polymerization: Ammonium persulfate can provide strong oxidizing active free radicals that attack the double bonds of tetrafluoroethylene molecules, triggering polymerization reactions to form polytetrafluoroethylene polymers with excellent corrosion resistance, high temperature resistance and low friction coefficient. When used, it is necessary to ensure the purity of the reaction system, control the temperature, pressure and other parameters, and prevent the molecular weight and structure of the polymer from being affected by improper conditions.

Polymerization of acrylic acid and its esters: In aqueous solution, ammonium persulfate rapidly decomposes to produce free radicals, which leads to polymerization of acrylic acid and its ester molecules. Its advantage is that the polymerization reaction can be carried out under relatively mild conditions, and the obtained polymer has good adhesion, water resistance and optical properties. When used, it is necessary to dissolve the monomer in the appropriate solvent to form a solution, and then add ammonium persulfate solution to control the reaction temperature and time.

Acrylamide polymerization: The free radicals generated by the decomposition of ammonium persulfate can trigger the polymerization of acrylamide, and the resulting polyacrylamide is widely used in water treatment, paper making, oil exploitation and other fields. By dissolving acrylamide monomer in water, adding an appropriate amount of ammonium persulfate, controlling the reaction temperature and time, the polymer meeting the demand can be obtained.

Polymerization of vinyl acetate: The decomposition of ammonium persulfate at lower temperatures produces free radicals, which leads to the polymerization of vinyl acetate. The polymerization conditions are relatively mild, the molecular weight and structure of the polymer can be controlled, so that the polymer has important applications in adhesives, coatings, textiles and other fields. Usually, vinyl acetate monomer and emulsifier are added to water to form an emulsion system, and then ammonium persulfate is added

Ammonium persulfate, as a polymerization initiator, has the advantages of mild reaction conditions, low price and good water resistance, and plays an important role in various polymerization reactions in the chemical industry

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