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Radical polymerizations involving esters of vinyl alcohol—II. Copolymerizations

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

Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
265 KB
Volume
4
Category
Article
ISSN
0014-3057

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✦ Synopsis

t4C-vinyl acetate has been used in studies at 60 ° of radical copolymerizations with methyl methacrytate and with vinyl formate, propionate, butyrate, phenylacetate and benzoate, t'~C-methyl methacrylate has been used similarly with the series of vinyl esters. Monomer reactivity ratios have been calculated. Comparisons have been made of the reactivities of the various monomers towards the polyvinyl acetate, polymethyl methacrylate and benzoyloxy radicals.

~4C-~'¢VL acetate has been used in studies of radical copolymerizations with methyl methacrylate, vinyl formate, vinyl propionate, vinyl butyrate, vinyl phenylacetate and vinyl benzoate; l'LC-methyl methacrylate has been similarly used with vinyl acetate and these other esters of vinyl alcohol. Tracer techniques are particularly useful for the analysis of copolymers derived from systems such as these. Other methods of analysis are unreliable either because the comonomers have very similar compositions and structures, or because only small quantities of one of the monomers enter the copolymers.

The work described here forms part of a study of the reactivities, towards reference radicals, of monomers having closely related structures. It has been shown already (1) that the esters of vinyl alcohol differ significantly in their reactivities towards the benzoyloxy radical.

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