Abstract
AbstractSodium ethylenesulfonate polymerizes readily in aqueous solution under the influence of ultraviolet light or in the presence of peroxide catalysts. The most important variable in the polymerization has been found to be the concentration of monomer, increased concentration leading to more rapid polymerization and higher molecular weights. Poly(sodium ethylenesulfonate) has been isolated as a brittle, white solid with weight‐average molecular weights as high as 150,000. Sodium ethylenesulfonate copolymerizes with a variety of water‐soluble monomers: acrylamide, acrylic and methacrylic acids, and their sodium salts. Although copolymerization occurs, water‐soluble copolymers of sodium ethylenesulfonate with acrylonitrile and with methyl acrylate could not be prepared. Water‐soluble copolymers of sodium ethylenesulfonate with vinyl acetate and with vinyl chloride have been made, but they contain only small amounts of acetate and chloride. No copolymers could be prepared with butadiene, isobutylene, styrene, α‐methylstyrene, n‐butyl vinyl ether, allyl alcohol, N‐allylacetamide, maleic acid, or fumaric acid. The copolymerization of sodium ethylenesulfonate with acrylamide and with sodium acrylate has been used to calculate reactivity ratios. From these, sodium ethylenesulfonate has been calculated to have a Q value of 0.19 and an e value of +1.51.
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