51391-19-6Relevant articles and documents
E.S.R. Spectra of Free Radicals Relevant to Methacrylate Polymerization
Keah, Hooi Hong,Rae, Ian D.,Hawthorne, David G.
, p. 659 - 669 (2007/10/02)
Carbon-based free radicals were generated by thermal cleavage of the tetraester Me2C(COOMe)-CH2-CMe(COOMe)-CMe(COOMe)-CH2-C(COOMe)Me2 which is a model for head-to-head units in a poly(methyl methacrylate) chain.The resulting electron spin resonance spectrum had higher resolution than the 'nine-line' spectrum previously reported; this enabled identification of the component radicals.In the present case, the spectrum was well matched by a summation of spectra of the Me2C(COOMe)-CH2-CMe(COOMe) radical and the 1-methoxycarbonyl-1-methylethyl radical Me2-C-COOMe derived from it by loss of methyl methacrylate.Both of these radicals were generated in separate experiments.Radicals were also generated from starting materials containing a CD3 group in place of the single CH3.
The synthesis of deuterated methyl methacrylates
Ayrey,Wong
, p. 935 - 944,939,940,943 (2007/10/06)
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