ESR study of nitrogen-containing radicals formed on photolysis and radiolysis of solid polymethylmethacrylate and cellulose triacetate in a nitrogen oxide atmosphere

Gaponova, I. S.; Pariiskii, G.B.; Toptygin, D.Ya.

doi:10.1016/0032-3950(88)90111-6

Cited by 3 publications

(5 citation statements)

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“…=2.0025 ± 0.0005, = 2.0054 ± 0.0005 [16]. As for photolysis, g-irradiation of PMMA is accompanied by the detachment of ester groups and the formation of acylalkylaminoxyl radicals similarly to the reaction (1).…”

Section: Interaction Of Nitric Oxide With Products Of Photolysis and Radiolysis Of Polymersmentioning

confidence: 92%

“…As was shown in the work [16], the radiolysis of polytetrafluoroethylene (PTFE) oriented films and copolymer of tetrafluoroethylene with hexafluoropropylene initiates reactions with the formation of iminoxyl macroradical according to the following scheme: The NO 3 radicals are characterized by high reactivity in reactions with various organic compounds [18][19][20][21][22]. Typical reactions of these radicals are abstraction of hydrogen atoms from CH and addition to double bonds.…”

Section: Interaction Of Nitric Oxide With Products Of Photolysis and Radiolysis Of Polymersmentioning

confidence: 99%

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Polymers in polluted atmosphere. Free radical and ion-radical conversions initiated by nitrogen oxides

Davydov¹,

Pariiskii²,

Gaponova³

et al. 2008

ChChT

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Section: Interaction Of Nitric Oxide With Products Of Photolysis and Radiolysis Of Polymersmentioning

confidence: 92%

Section: Interaction Of Nitric Oxide With Products Of Photolysis and Radiolysis Of Polymersmentioning

confidence: 99%

Polymers in polluted atmosphere. Free radical and ion-radical conversions initiated by nitrogen oxides

Davydov¹,

Pariiskii²,

Gaponova³

et al. 2008

ChChT

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“…Radiolysis of PMMA at room temperature results in the formation of acylalkylnitroxyl and iminoxyl macroradicals, 102 the proportion the latter being much higher than in the case of photolysis. The results obtained show that radiolysis causes an increase in the contribution of the reaction of hydrogen abstraction from the alkyl groups of the polymer to the overall reaction.…”

Section: Photolysis and Radiolysis Of Poly(methyl Methacrylate) And C...mentioning

confidence: 97%

“…The structures of the radicals formed depend on the temperature and the wavelength of the photolysing light. 102 with the parameters A N k = 3.2AE0.1 mT and g k = 2.0026 for the solid phase (Fig. 7 b) and a N = 1.5AE0.1 mT and g = 2.0064 for a solution.…”

Section: Photolysis and Radiolysis Of Poly(methyl Methacrylate) And C...mentioning

confidence: 99%

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Reactions of nitrogen oxides with polymers

Pariiskii¹,

Gaponova²,

Davydov³

2000

Russ. Chem. Rev.

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The mechanisms of the reactions of nitrogen oxides and The mechanisms of the reactions of nitrogen oxides and different classes of solid polymers are considered. Particular different classes of solid polymers are considered. Particular emphasis is given to the analysis of the mechanisms of the emphasis is given to the analysis of the mechanisms of the formation of stable nitroxyl radicals. Double bonds and amide formation of stable nitroxyl radicals. Double bonds and amide groups of macromolecules, as well as hydroperoxides and per-groups of macromolecules, as well as hydroperoxides and peroxide macroradicals are shown to be involved in the reactions with oxide macroradicals are shown to be involved in the reactions with nitrogen oxides. The application of nitrogen oxides for the nitrogen oxides. The application of nitrogen oxides for the preparation of spin-labelled polymers and the use of the ESR preparation of spin-labelled polymers and the use of the ESR imaging technique (ESR tomography) for the investigation of the imaging technique (ESR tomography) for the investigation of the structure of the reaction front during nitration of solid polymers structure of the reaction front during nitration of solid polymers are considered. The bibliography includes 111 references are considered. The bibliography includes 111 references. .

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