Ferrocene-containing polymers. I. Radiation-induced polymerization of ferrocenylmethyl methacrylate. [. gamma. radiation]
- Fukui Univ., Japan
..gamma..-Ray-induced polymerizations of ferrocenylmethyl methacrylate (FMMA) in crystalline and amorphous states were investigated with kinetical and ESR methods. In the crystalline state the polymerization of FMMA proceeded slowly and gave low-molecular-weight polymers, whereas in the amorphous state it proceeded rapidly and gave polymers of much higher molecular weight. Molecular weight distributions of these polymers were binodal. The temperature dependence and the dose-rate dependence of the polymerization rates were different between the two states. Wide-line (NMR) spectra of the amorphous monomer suggested that the polymerization proceeded in a supercooled state. (ESR) spectra of ..gamma..-irradiated FMMA and 1,1'-ferrocenyl-di(methyl methacrylate) showed that ferrocene radicals and methacrylic radicals were formed simultaneously at low temperature; with increasing temperature the former radicals disappeared, whereas the latter changed into growing chain radicals. The yields of radicals were relatively low, this means that ferrocene groups in the monomers behave as a radiation energy absorber. 3 figures, 9 tables.
- OSTI ID:
- 6115658
- Journal Information:
- J. Polym. Sci., Polym. Chem. Ed.; (United States), Journal Name: J. Polym. Sci., Polym. Chem. Ed.; (United States) Vol. 17:1; ISSN JPLCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
AMORPHOUS STATE
CARBOXYLIC ACID ESTERS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
COMPARATIVE EVALUATIONS
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DATA FORMS
DIENES
DOSE RATES
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ESTERS
EXPERIMENTAL DATA
GAMMA RADIATION
HYDROCARBONS
INFORMATION
IONIZING RADIATIONS
IRON COMPLEXES
ISOLATED VALUES
KINETICS
LOW TEMPERATURE
MAGNETIC RESONANCE
MEDIUM TEMPERATURE
METHACRYLIC ACID ESTERS
MOLECULAR WEIGHT
NUCLEAR MAGNETIC RESONANCE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
POLYENES
POLYMERS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
REACTION KINETICS
RESONANCE
SOLVENTS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TRANSITION ELEMENT COMPLEXES
YIELDS