H. Boudevska, C. Brutchkov
Jul 3, 1979
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0
Influential Citations
10
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Journal
Macromolecular Chemistry and Physics
Abstract
Polymerizations of 1-naphthyl methacrylate and 2-naphthyl methacrylate in acetone and in acetonitrile were carried out in the presence of 2,2′-azoisobutyronitrile at 55 and 60°C, respectively. The polymers precipitate during the polymerization. Poly(1-naphthyl methacrylate)s are partly soluble in common organic solvents. The polymerization medium does not influence noticeably the intrinsic viscosity of the resulting polymers. The tacticity was determined by 1H NMR analysis after conversion of the poly(naphthyl methacrylate)s into poly(methyl methacrylate)s. Poly(naphthyl methacrylate)s obtained in acetone and acetonitrile have a higher content of isotactic triads than those obtained in solvents with low dielectric constants. The observed results correlate with the changes in the 1H NMR spectra of the monomers depending on the dielectric constants of the solvents.