Radical reactions involving esters of fumaric acid—I. Copolymerizations

✍ Scribed by J.C. Bevington; M. Johnson; J.P. Sheen

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 320 KB
• Volume: 7
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(71)90147-9

✦ Synopsis

x4C-labelled samples of diethyl-, ethyl n-hexyl-and di-n-hexyl fumarates have been used in studies at 60 ~ of their radical copolymerizations with styrene and with vinyl acetate. Changing the diluent from benzene to dimethylformamide in some of the copolymerizatious had no effect on the compositions of the copolymers. Monomer reactivity ratios have been calculated for most of the systems; comparisons have been made of the reactivities of the fumarate esters towards the polyvinyl acetate radical.

THIS paper is the first of a series concerned with a general examination of the behaviour of fumarate esters in various radical reactions. 14C-labelled samples of diethyl-, ethyl n-hexyl-and di-n-hexyl fumarates have been used in studies of their radical copolymerizations with styrene and with vinyl acetate.

Tracer techniques can give accurate measurements of copolymer compositions even when the copolymers contain only very small amounts of one of the monomers. (1) In this work, some of the copolymers contained only a few fumarate ester units so that the use of the tracer method was particularly advantageous.