Abstract

Composition diagrams have been obtained for the homogeneous radical copolymerisation of acrylic acid and methoxypolyethylene glycol methacrylate (with a degree of oxyethylation of 23) in aqueous solutions. For all initial comonomer ratios, methacrylic ester unit enrichment of copolymers formed at low conversions (less than 10%) was established. Using Mayo–Lewis, Finemann–Ross, and Kelen–Tüdös methods, we determined the relative activities of acrylic acid (0.02–0.07) and methoxypolyethylene glycol methacrylate (1.14–1.20).

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