Degradation radiation induced

Radiation-induced degradation reactions are in direct opposition to cross-linking or curing processes, in that the average molecular weight of the preformed polymer decreases because of chain scission and without any subsequent... 

Cheng et al. [116] reported that the structure of primaquine phosphate irradiated with 0.7—10 Mrad remained unchanged. The energy transfer action of the quinolyl group was considerable due to its resonance stabilization. Radiation-induced degradation of polyl(vinyl alcohol) decreased in the presence of primaquine phosphate but the degradation mechanism was unaffected. The content of primaquine phosphate showed linear relationship with degradation parameters of poly(vinyl alcohol). 

Fortin, J. B. Lu, T. M., Ultraviolet radiation induced degradation of poly para xylylene (parylene) thin films, Thin Solid Films 2001, 397, 223 228... 

While PMMA is an attractive material because of its resolution characteristics, its sensitivity to radiation induced degradation is low, and its dry-etching characteristics are poor. The e-beam and deep-UV exposure doses for PMMA are —100 nC cm-2 (38) and >1 Jem-2 (40), respectively. The fact that nanometer resolution is readily achieved in this material has, however, prompted many researchers to examine substituted systems in attempts to effect improved performance. 

Ilcim M et al (2010) ET-IR study of gamma-radiation induced degradation of polyvinylalcohol (PVA) and PVA/humic acids blends. J Radioanal NucI Chem 283 9-13... 

Isomerization must occur during the radiation-induced degradation, either of the initially produced 1-butene as a radiation-induced secondary... 

Because of the great interest in the radiation-induced degradation of DNA, there are many investigations on the e.s.r. spectroscopy of solid nucleosides and nucleotides,372-388 as well as of DNA itself.387 This field has briefly reviewed in Ref. 388. 

The major components identified among the volatiles produced in haddock upon irradiation are benzene and toluene and the sulfur compounds. These compounds may be expected from the radiation-induced degradation of protein. The only carbonyl compounds found are acetone and methyl ethyl ketone, and these are present in only moderate amount. Trace quantities of low molecular weight hydrocarbons were also found. The detection of hydrocarbons, even in trace amounts, led us to question whether their origin was in the protein or in the small amount of fat present in the haddock. 

Cadet J, Voituriez L, Berger M, Myers LS Jr (1983) Radiation-induced degradation of purine and pyrimidine 2 -deoxyribonudeosides in agueous KBr solutions. Z Naturforsch 38b 1643-1651 Champagne MH, Mullins MW, Colson A-O, Sevilla MD (1991) Electron spin resonance evidence for intra- and intermolecular oo bonding in methionine radicals relative stabilities of S-CI, S-Br, S-N, and S-S three electron bonds. J Phys Chem 95 6487-6493 Chawla OP, Fessenden RW (1975) Electron spin resonance and pulse radiolysis studies of some reactions of S04. J Phys Chem 79 2693-2700... 

Douki T, Bretonniere Y, Cadet J (2000) Protection against radiation-induced degradation of DNA bases by polyamines. Radiat Res 153 29-35... 

Cadet J, Voituriez L, Berger M (1983) Separation of nucleic acid components and their radiation-induced degradation products on chemically bonded C12 reversed-phase thin-layer plates. J Chromatogr 259 111-119... 

Getoff N. Advancements of radiation induced degradation of pollutants in drinking and waste water. Appl Radiat Isot 1989 40 585-594. 

Gehringer P, Proksch E, Szinovatz W. Radiation-induced degradation of trichloroethylene and tetrachloroethylene in drinking water. Int J Appl Radiat Isot 1985 36 313-320. 

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