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A high-field 13C-NMR study of the aqueous copolymerisations of acrylonitrile and vinyl acetate. Microstructural observations.

Research output: Contribution to journalJournal article

Published

Journal publication date12/1994
JournalEuropean Polymer Journal
Journal number12
Volume30
Number of pages7
Pages1367-1373
Original languageEnglish

Abstract

A detailed examination has been undertaken of the high field 13C-NMR spectrum of various acrylonitrile/vinyl acetate copolymers prepared by radical initiation in a heterogeneous aqueous batch reaction (taken to low conversion). It has been possible to establish the triad, tetrad and pentad sequences for copolymers employing sequence patterns and peak fractions as an aid to peak assignments. These results indicate that the copolymer cotacticity is virtually independent of the comonomer feed ratio.