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Reactivities of monomers towards the 2-cyano-2-propyl radical at 100°

✍ Scribed by J.C. Bevington; T.N. Huckerby; S.C. Varma

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
235 KB
Volume
22
Category
Article
ISSN
0014-3057

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✦ Synopsis

Alrstraet--~3C-NMR spectroscopy has been used for examination of 2-cyano-2-propyl end-groups in copolymers of styrene (STY) with methacrylonitrile (MAN) and with vinyl acetate (VAC) prepared at 10@' using as initiator 2-cyano-2-propylazoformamide enriched in its methyl groups with carbon-13. It is deduced that at 100 ° STY is twice as reactive as MAN. and 20 times as reactive as VAC towards the (CH3)2C(CN) radical. There is discussion of the relation between these results and those for the same systems at 60 c.

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