Výsledky vyhledávání - "D. V. P. R. Varaprasad"

Aqueous Redox Polymerization of Acrylonitrile Initiated by Systems Based on Tervalent and Tetravalent Vanadium in Combination with N-Bromosuccinimide as the Oxidant

Autor: D. V. P. R. Varaprasad, V. Mahadevan

Publikováno v: Journal of Macromolecular Science: Part A - Chemistry. 19:781-795

The kinetics of polymerization of acrylonitrile (AN) initiated by the systems V(IV)/N-bromosuccinimide (NBS) and V(HI)/NBS have been investigated in aqueous acid media in the 25–35°C range. Evidence for Michaelis-Menten kinetics is obtained from o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::497f772f3613939b549bbc506706eecc
https://doi.org/10.1080/00222338308069458

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Use of cyclohexanone oxime as an oxidant in redox polymerization: Kinetics of oxidation and polymerization

Autor: V. Mahadevan, D. V. P. R. Varaprasad

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 24:3279-3290

Cyclohexanone oxime was employed as an oxidant in combination with Vanadium (III) as a redox initiator system for the polymerization of AN and MMA. Kinetics were investigated in aqueous sulphuric acid medium and mechanisms for oxidation and polymeriz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce90504bf22d137ae964ff9e06e3df2a
https://doi.org/10.1002/pola.1986.080241212

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Redox Polymerization of Acrylamide Initiated by the System Trisacetylacetonato Vanadium(lll)-Benzoyl Peroxide in Dimethylformamide

Autor: V. Mahadevan, D. V. P. R. Varaprasad

Publikováno v: Journal of Macromolecular Science: Part A - Chemistry. 19:77-84

The kinetics of polymerization of acrylamide (AA) initiated by the redox system V(III)(acac)3 -benzoyl peroxide (BPO) in DMF were investigated in the temperature range 40–45°C. A direct second-order reaction between V(III)(acac)3 and BPO was evide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1089e2849d8f7ef8c8f8a96b23799927
https://doi.org/10.1080/00222338308069423

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Hydroxamic acid polymers. Effect of structure on the chelation of iron in water: II

Autor: J. Rosthauser, D. V. P. R. Varaprasad, Anthony Winston

Publikováno v: Journal of Polymer Science: Polymer Chemistry Edition. 22:2131-2143

The effect of structure on the ability of hydroxamic acid polymers to chelate iron(III) was examined. The polymers were derived from acryloyl or methacryloyl backbones that bore side chains terminated in hydroxamic acids. The side chain length, which

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::169c51d89300bfb792510b903bea2570
https://doi.org/10.1002/pol.1984.170220915

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Polymeric Hydroxamic Acids for Iron Chelators Therapy

Autor: H. Rosenkrantz, A. Winston, D. V. P. R. Varaprasad, J. J. Metterville

Publikováno v: Polymeric Materials in Medication ISBN: 9781489922472

Iron chelation therapy is used to remove iron in cases of iron poisoning and Cooley’s Anemia. Cooley’s Anemia is characterized by an inability to synthesize the 3-chain of hemoglobin. Frequent transfusion, the primary treatment, introduces iron,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9097ea92e2e2531e557159866a39775a
https://doi.org/10.1007/978-1-4899-2245-8_17

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Kinetics of oxidation of vanadium(III) by hydroxylamine in acid medium

Autor: V. Mahadevan, D. V. P. R. Varaprasad

Publikováno v: IndraStra Global.

The kinetics of oxidation of vanadium(III) by hydroxylamine have been investigated at high acidities in the temperature range 25-30 �C. Rates decreased with increasing acidity of the medium. Both NH2OH and NH3OH+ are capable of oxidizing V(III) in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2013c3f2bc08f46434c9d10a6abfa37
https://igi.indrastra.com/items/show/68109

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