Spontaneous copolymerization of acrylic acid with 2-methyl-2-thiazoline

Acrylic acid as an electrophilic monomer was copolymerized in the absence of initiator under various experimental conditions with 2-methyl-2-thiazoline as a nucleophilic monomer. The copolymers were characterized by elemental analysis, FT-i.r., 1H-NMR and 13C-NMR spectroscopy. The copolymer compositions were determined by elemental analyses. All the copolymers are statistical; they are rich in acrylic acid units. From the copolymer compositions, FT-i.r., 1H-NMR and 13C-NMR spectra, it was possible to suggest a copolymer structure.