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Radical Copolymerization of 2-(3′-Acryloxy)propoxythioxanthone and 1-Methyl-4-(3′-acryloxy)propoxythioxanthone with Methyl Methacrylate

✍ Scribed by Corrales, T.; Catalina, F.; Peinado, C.; Madruga, E. L.; Allen, N. S.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 282 KB
Volume: 42
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199704)42:4<397::aid-pi746>3.0.co;2-6

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✦ Synopsis

Two new monomers based on thioxanthone, 2-(3@-acryloxy)propoxythioxanthone (M-2) and 1-methyl-4-(3@-acryloxy)propoxythioxanthone (M-4), were prepared and their radical copolymerization at 70¡C with methyl methacrylate (MMA) was studied. By varying the conversion reached for a Ðxed feed composition, and using Jaacks method, the reactivity ratios were f MMA \ 0É983, determined. Identical values of reactivity ratios were found for both systems, with values of and The homopolymerization of MMA r MMA \ 2É46 r Mv2 \ r Mv4 \ 0É4. in the presence of a model compound, 1-methyl-4-propoxythioxanthone, was also examined and conÐrmed that the thioxanthone chromophore does not have any inÑuence on the free radical polymerization of MMA.

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