Abstract

Polymerizations of methyl methacrylate and styrene have been performed in the presence of thecis andtrans isomers of 4-methoxy-4′-chlorostilbene (SSTL) using as initiators benzoyl peroxide and 2-cyano-2-propylazoformamide, both enriched with carbon-13.13C-NMR spectra of the polymers show that SSTL units are present at many of the sites adjacent to benzoate end-groups but not to a detectable extent at sites adjacent to 2-cyano-2-propyl end-groups. The presence of the substituents in the molecule of stilbene greatly enhances its reactivity towards the benzoyloxy radical.

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