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LOW TEMPERATURE POLYMERIZATION STUDIES.
AKRON UNIV OHIO INST OF RUBBER RESEARCH
Further investigation of the radiation polymerization of fluoral in methylene chloride confirmed that a rate relation of the form Rp kpMMS, where M monomer, and S solvent can be applied over a range of monomer concentration from 1 to 6 molar. This can be taken as evidence for termination by reaction with the methylene chloride. The results are consistent with a preferred anionic mode of polymerization of this monomer. Other experiments have shown that fluoral is very readily polymerized by bases, even by such weakly basic compounds as dimethylformamide. The polymerization of the fluorovinyl monomers is probably caused by the high energy radical-cation formed as a result of primary radiolysis, i.e. using VF as an example CH2 CH2 photon yields .CH2CHF e-. This species can polymerize as a cation or as a radical however, at low temperature the cation reaction is the more vigorous .CH2CHF VF yields .CH2CHFmCH2CHF.
Progress rept. no. 7, 1 Jul-30 Sep 65,
See also AD-618 228.
AF04 611 9694