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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2260

Title: Compositional sequence determination of acrylonitrile-butyl acrylate copolymers by 13C n.m.r. spectroscopy
Authors: Brar, A S
Sunita
Keywords: copolymers
monomer structure
spectroscopy
Issue Date: 1993
Citation: Polymer, 34(16), 3391-3396p.
Abstract: 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{H} 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.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/2260
Appears in Collections:Chemistry

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