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Showing 1 to 13 of 13 for “"Free radical reactions"”.
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Free radical reactions of allylic and propargylic derivatives
<p>Addition of tert-butyl radical, generated from t-BuHgCl, to allyl or propargyl derivatives forms adduct radicals which can undergo [beta]-elimination with substituents such as halogen, PhS, PhSO[subscript]2 to form the alkyl-substituted propene or allene and an eliminated radical which …
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Picosecond studies of free radical reactions in solution
The 2,7-dihalofluorenylidenes were examined. Electron paramagnetic resonance (EPR) spectroscopy shows that these carbenes are ground-state triplets. These carbenes react with methanol to form 9-methoxy ethers. The absence of a heavy atom effect in this reaction suggests that intersystem crossing is …
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Molecular beam study of polyatomic free radical reactions.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1972. Ph.D.
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Exploratory studies in the use of microwave radiation to assist the extraction of pollutants from various matrices.
… field were noted, probably resulting from free radical reactions. This poses possibly serious problems for the use of microwave radiation as a means for recovering compounds adsorbed on activated carbon. (Abstract sortened by UMI.)
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The effects of ionising radiation on polypropylene
… on polypropylene is reviewed. Oxidative and free radical reactions are discussed with particular reference to post-irradiationeffects.Isotactic and atactic polypropylene were δ and electron irradiated to doses of up to 20 megarad. Irradiations weremainly made in air. A series of other …
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Preparation, Characterization, And Application of Liposomes in the Study of Lipid Oxidation Targeting Hydroxyl Radicals
… reactive oxygen species (ROS) including hydroxyl radicals, are generated. Hydroxyl radicals formed in close proximity to DNA, nucleotides, proteins, and lipids rapidly oxidize these biological molecules in a nonspecific way. However, their toxicity is limited by their short lifetimes. Currently, …
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Surface initiated ATRP of substituted styrenes and functional monomers on flat surfaces
Thesis (Ph. D.)--Michigan State University. Chemistry, 2010
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The chemical modification of polymer blends by reactive processing
… in PS/EPDM blends via peroxide-initiated free radical reactions during melt mixing. From a comprehensive survey of previous studies of compatibility enhancement in polystyrene blends, it was recognised that reactive processing offers opportunities for technological success that have not …
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FUEL NITROGEN CONVERSION DURING FUEL RICH COMBUSTION OF PULVERIZED COAL AND CHAR
… 200 to 375 ppmv, indicating that interconversion reactions in the gas phase are dominating. The kinetics which govern the volatile nitrogen reactions can be described by global homogeneous kinetics as follows: UNFORMATTED TABLE/EQUATION FOLLOWS: r₁ = d/dt[HCN] = -5.5x10¹⁷ exp(-83.3 …
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Reactions and properties of the isomeric dihydrothiophene 1, 1- dioxides
… of considerable interest to study the chemical reactions of these two polyfunctional molecules to gain some information concerning the influence of the functional groups upon each other. Of further interest would be to compare the reactions of I and II since differences in chemical properties …
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Co-pyrolysis of torrefied biomass and coal : product evaluation and reaction modelling
… to the course of primary and secondary pyrolysis reactions being interwoven, clear limitations of knowledge still exist in the field of modelling, specifically for torrefied biomass. The aim of this thesis was to investigate the yields and composition of products derived during co-pyrolysis of …