A high-field 13C-NMR study of the aqueous copolymerizations of acrylonitrile and vinyl acetate. Determination of comonomer reactivity ratios.

Cheetham, Paul F. and Huckerby, Thomas N. and Tabner, Brian J. (1994) A high-field 13C-NMR study of the aqueous copolymerizations of acrylonitrile and vinyl acetate. Determination of comonomer reactivity ratios. European Polymer Journal, 30 (5). pp. 581-587. ISSN 1873-1945

Full text not available from this repository.

Abstract

The radical initiated aqueous “slurry” copolymerization of acrylonitrile and vinyl acetate has been investigated. High field 13C-NMR spectra have been recorded for samples prepared employing both batch and starve-fed (semi-continuous) techniques. Copolymer composition and A-centred triad fractions have been obtained from the NMR spectra for a range of different feed compositions and give terminal model reactivity ratios of rV and rA of 2.7 and 0.05, respectively. However, the penultimate model gives a superior fit to the experimental A-centred triad fraction data. A comparison is made with data obtained for the same system employing the spin-trapping technique in conjunction with ESR spectroscopy.

Item Type:
Journal Article
Journal or Publication Title:
European Polymer Journal
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
ID Code:
22403
Deposited By:
Deposited On:
03 Feb 2009 12:17
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 06:30