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Acrylonitrile-butyl acrylate (A/B) copolymers of different monomer compositions were prepared by bulk polymerization using a free radical initiator. Copolymer compositions were determined by elemental analyses and comonomer reactivity ratios were determined using a non-linear least squares errors-in-variables model. Terminal and penultimate reactivity ratios were calculated using the observed monomer triad sequence distribution determined from 13C{IH} n.m.r, spectra. The triad sequence distribution was used to calculate diad concentrations, conditional probability parameters, number-average sequence lengths and block character of the copolymers. The observed triad sequence concentrations determined from 13C{1H} n.m.r, spectra agreed well with those calculated from reactivity ratios.

Посилання на статтю:

Compositional sequence determination of acrylonitrile-butyl acrylate copolymers by 13C n.m.r, spectroscopy / A. S. Brar* and Sunita // Polymer. – 1993. – Vol 34. – P. 3391-3396.

Compositional sequence determination of acrylonitrile-butyl acrylate copolymers by 13C n.m.r, spectroscopy - Завантажити.