Radical copolymerization of 2-ethylacrylic acid and methacrylic acid

Creators: You, Hong; Tirrell, David A.

Abstract

Copolymers of 2-ethylacrylic acid (EAA) and methacrylic acid (MAA) were prepared in bulk and in N,N-dimethylformamide (DMF). Although precipitation of the copolymers was observed in bulk, the reaction mixtures remained apparently homogeneous in DMF. Best-fit terminal-model reactivity ratios were determined by a nonlinear least squares technique to be r_(MAA) = 1.14 and r_(EAA) = 0.23 in bulk, and r_(MAA) = 1.91 and r_(EAA) = 0.09 in 50% DMF solution. Examination of ^(13)C-NMR spectra provided convincing evidence for the formation of statistical copolymers. Copolymerizations richer in MAA provided copolymers of higher molecular weights.

Additional Information

© 1990 John Wiley & Sons. Received December 12, 1989; Accepted March 7, 1990. This work was supported by U.S. Army Research Office Grant No. DAAL03-88-K-0038. NMR spectra were recorded in the University of Massachusetts NMR Laboratory, which is supported in part by the NSF Materials Research Laboratory at the University.

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Radical copolymerization of 2-ethylacrylic acid and methacrylic acid

Abstract

Additional Information

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