Determination of free radical yields in the radiolysis of mixtures by the polymerization method

Journal Article · Mon Jun 01 04:00:00 EDT 1959 · Journal of Physical Chemistry (U.S.)

DOI:https://doi.org/10.1021/j150576a007· OSTI ID:4255138

Chapiro, A

Radiation-initiated solution polymerization of vinyl monomers can be used as a method for investigating the radiolysis of binary mixtures. In such systems the monomer is one of the components of the mixture and at the same time acts as a free radical scavenger. The rate of free radical production in the system can be derived from polymerization rates provided the rate constants for chain propagation and termination are known. A number of systems have been examined. In the most simple case the rate of free radical production is a linear function of chemical composition of the mixture. This situation applies to styrene solutions in aromatic hydrocarbons and to methyl methacrylate and vinyl acetate solutions in methyl and ethyl acetate. Other systate solutions in methyl and ethyl acetate. Other systems however exhibit "protection' and sensitization effects. These results are discussed on the basis of current theories for the kinetics of energy transfer processes. Free radical yields are derived from all available data and the results are compared with yields obtained by other methods.

• Research Organization: Faculte des Sciences, Paris
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-016042
• OSTI ID: 4255138
• Journal Information: Journal of Physical Chemistry (U.S.), Journal Name: Journal of Physical Chemistry (U.S.) Vol. Vol: 63; ISSN JPCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETATES
ACRYLIC ACID
AROMATICS
CHEMISTRY
DECOMPOSITION
DECONTAMINATION
EFFICIENCY
ENERGY
ETHYL RADICALS
FREE RADICALS
MECHANICS
METHYL RADICALS
MIXING
PHASE DIAGRAMS
POLYMERIZATION
QUANTITATIVE ANALYSIS
RADIATION CHEMISTRY
RADIATIONS
RADIOLYSIS
REACTION KINETICS
REACTIVITY
SOLUTIONS
STYRENE
VINYL RADICALS