Articles with "spin trapping" as a keyword



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Photoinduced transformation of glycerol in titania suspensions. (An EPR spin trapping study of radical intermediates)

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Published in 2017 at "Catalysis Today"

DOI: 10.1016/j.cattod.2017.12.005

Abstract: Abstract Formation of radical intermediates upon photocatalytic (UVA) glycerol transformation in aerated aqueous TiO2 (P25) suspensions was followed by EPR spin trapping technique. Character and concentration of the spin-adducts generated by the addition of the… read more here.

Keywords: radical intermediates; glycerol; transformation; spin ... See more keywords
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In Situ EPR Spin Trapping and Competition Kinetics Demonstrate Temperature-Dependent Mechanisms of Synergistic Radical Production by Ultrasonically Activated Persulfate.

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Published in 2022 at "Environmental science & technology"

DOI: 10.1021/acs.est.1c08562

Abstract: Ultrasound coupled with activated persulfate can synergistically degrade aqueous organic contaminants. Here, in situ electron paramagnetic resonance spin trapping was used to compare radicals produced by ultrasonically activated persulfate (US-PS) and its individual technologies, ultrasound… read more here.

Keywords: temperature; ultrasonically activated; spin trapping; activated persulfate ... See more keywords
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Spin-Trapping Analysis and Characterization of Thermal Degradation of Thermoplastic Poly(ether–ester) Elastomer

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Published in 2018 at "Macromolecules"

DOI: 10.1021/acs.macromol.7b02654

Abstract: We investigated the thermal degradation of poly(butylene terephthalate)-co-poly(ethylene oxide) (PBT-co-PEO), a thermoplastic poly(ether–ester) elastomer (TPEE), through proton nuclear magnetic resonance (NMR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), gel permeation… read more here.

Keywords: degradation; thermal degradation; analysis; poly ... See more keywords
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Para-Substituted α-Phenyl-N-tert-butyl Nitrones: Spin-Trapping, Redox and Neuroprotective Properties

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Published in 2020 at "ACS Omega"

DOI: 10.1021/acsomega.0c03907

Abstract: In this work, a series of para-substituted α-phenyl-N-tert-butyl nitrones (PBN) were studied. Their radical-trapping properties were evaluated by electron paramagnetic resonance, with 4-CF3-PBN being the fastest derivative to trap the hydroxymethyl radical (•CH2OH). The redox… read more here.

Keywords: para substituted; butyl nitrones; phenyl tert; tert butyl ... See more keywords
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Electron paramagnetic resonance and spin trapping to detect free radicals from allergenic hydroperoxides in contact with the skin: From the molecule to the tissue

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Published in 2022 at "Contact Dermatitis"

DOI: 10.1111/cod.14037

Abstract: A major research topic consists of revealing the contribution of radical‐mediated reactions in dermatological diseases related to xenobiotic‐induced stress to succeed risk‐assessment procedures protecting producers and consumers. Allergic contact dermatitis is the clinically relevant consequence… read more here.

Keywords: electron paramagnetic; paramagnetic resonance; spin trapping; tissue ... See more keywords
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Molecular Structure of Poly(vinyl alcohol)-Derived Carbon-Centered Radicals Studied by Rapid-Flow and Spin-Trapping ESR Measurements: A Short-Lived Intermediate Radical in the Initial Stage of the Graft Polymerization Reaction

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Published in 2017 at "Bulletin of the Chemical Society of Japan"

DOI: 10.1246/bcsj.20160332

Abstract: Continuous rapid-flow electron spin resonance (ESR) was used to detect poly(vinyl alcohol) (PVA)-derived carbon-centered radicals, in order to characterize the short-lived intermediate radicals in the initial stage of the graft polymerization of PVA. ESR spectra… read more here.

Keywords: carbon; rapid flow; carbon centered; spin ... See more keywords
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Spin-Trapping Analysis of the Thermal Degradation Reaction of Polyamide 66

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Published in 2022 at "Polymers"

DOI: 10.3390/polym14214748

Abstract: The radical mechanisms of the thermal degradation of polyamide 66 (PA66) occurring under a vacuum at a temperature range between 80 °C and 240 °C (which includes the temperature of practical applications) were investigated using… read more here.

Keywords: thermal degradation; spin trapping; reaction; analysis ... See more keywords
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Spin Trapping Analysis of Radical Intermediates on the Thermo-Oxidative Degradation of Polypropylene

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Published in 2022 at "Polymers"

DOI: 10.3390/polym15010200

Abstract: The purpose of this study is to investigate the thermo-oxidative degradation behavior of polypropylene (PP) by comparing three types of pristine PP granules (consisting of homopolymer, random copolymer, and block copolymer) with their corresponding oxidized… read more here.

Keywords: thermo oxidative; spin trapping; spin; oxidative degradation ... See more keywords