Redox for Main Polymerization of Emulsion Polymers

When introduced into the system toward the end of monomer conversion in the main polymerization period, a flood of radicals is introduced into the system, converting monomers into dimers, oligomers and short polymer chains. Since most of the monomer has already been converted into desired polymer in the main polymerization step, these oligomers are not viewed as detrimental to the formed polymer. Ascorbic acid (AA) Sodium formaldehyde sulfoxylate (SFS) Sodium sulfite Sodium metabisulfite (SMBS) Advanced sulfinic acid derivative Comparison of Various Reducing Agents for Redox-Initiated Main Polymerization An earlier study by BrüggemannChemical screened several reducing agents to determine which one would produce the fastest and most complete conversion of monomer in a styrene-butyl acrylate system. [...]peak (Peak 2) is a combination of oligomers and surfactant. [...]peak (Peak 2) is a combination of oligomers and surfactant, and remains constant for the three reaction temperatures.