RADIOCHEMICAL YIELDS OF FREE RADICALS IN BINARY MIXTURES OF CARBON TETRACHLORIDE WITH SEVERAL ORGANIC ESTERS

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Journal de Chimie Physique (France) Merged with Rev. Gen. Colloides to form J. Chim. Phys. Rev. Gen. Colloides

OSTI ID:4188093

Chapiro, A; Goethals, E; Munk, S

A study was made of the radiochemical yields of free radicals G/sub R/ in mixtures of CCl/sub 4/ with methyl acrylate and vinyl acetate. The G/sub R/ values were deduced both from radiochemical polymerization kinetics of the two monomers in CCl/sub 4/ and from the rate of consumption of DPPH (diphenylpicrylhydrazyl) in binary mixtures of various compositions. In the CCl/ sub 4/-methylacrylate, the two methods showed a strong sensitization for the production of free radicals. On the other hand, in the CCl/sub 4/-vinyl acetate mixtures a de-activation was found by the polymerization method and a slight sensitization by the DPPH method. These results are interpreted as indicating that polymerization of the vinyl acetate was retarded by the formation of less- reactive CCl/sub 3/ radicals. The agreement of these results with those of other workers is discussed. (tr-auth)

• Research Organization: Centre National de la Recherche Scientifique, Bellevue, France
• NSA Number: NSA-14-010488
• OSTI ID: 4188093
• Journal Information: Journal de Chimie Physique (France) Merged with Rev. Gen. Colloides to form J. Chim. Phys. Rev. Gen. Colloides, Journal Name: Journal de Chimie Physique (France) Merged with Rev. Gen. Colloides to form J. Chim. Phys. Rev. Gen. Colloides Vol. Vol: 57; ISSN JCPQA
• Country of Publication: Country unknown/Code not available
• Language: French

Related Subjects

ACETATES
ACRYLATES
CARBON TETRACHLORIDE
CHEMISTRY
DPPH
ESTERS
FREE RADICALS
METHACRYLATES
METHACRYLIC ACID
MIXING
ORGANIC NITROGEN COMPOUNDS
PHENYL RADICALS
PICRYL RADICALS
POLYMERIZATION
PREPARATION
SALTS
VINYL RADICALS