Abstract
The microstructure of trans-4-methacryloyloxyazobenzene-methyl methacrylate copolymers prepared by solution polymerization process using AIBN as initiator is analyzed by one-and two-dimensional spectroscopy. Sequence distribution was calculated from the 13 C( 1 H)-NMR spectra of the copolymers. Comonomer reactivity ratios were determined using the Kelen-Tudos and the nonlinear error-in-variables methods are r A = 1.14 ± 0.08 and r M = 0.51 ± 0.03; r A = 1.13 ± 0.1 and r M = 0.50 ± 0.04, respectively. The sequence distribution of A- and M-centered triads determined from 13 C( 1 H)-NMR spectra of copolymer is in good agreement with triad concentration calculated from a statistical model. The 2-D heteronuclear single-quantum correlation and correlated spectroscopy (TOCSY) was used to analyze the complex 1 H-NMR spectrum.
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