Organic Reactions Occurring in or on Micelles. II. Kinetic and Thermodynamic Analysis of the Alkaline Fading of Triphenylmethane Dyes in the Presence of Detergent Salts<sup>1</sup>

Duynstee, E. F. J.; Grunwald, Ernest

doi:10.1021/ja01526a026

Cited by 78 publications

(36 citation statements)

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“…In all cases surfactant concentration is referred to the organic phase and not to the entire system. So, for a n AOT/decane/water microemulsion with [24,25]. The lack of data corresponding to the iodide-persulfate reaction in BHDC microemulsions and to the reaction CV+ + OH-in propan-2-01 microemulsions is due in the first case to the slowness of the reaction (kobs ca.…”

Section: Kinetic Measurementsmentioning

confidence: 99%

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions

Izquierdo

Casado

Rodrı́guez

et al. 1992

Int J of Chemical Kinetics

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Section: Kinetic Measurementsmentioning

confidence: 99%

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions

Izquierdo

Casado

Rodrı́guez

et al. 1992

Int J of Chemical Kinetics

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“…Sodium dodecyl sulfate (BDH) was reusing a different redox system was studied in the crystallized from absolute alcohol and methanol. 22 micellar phase, [5][6][7][8][9][10][11] in microemulsion, [12][13][14] in emulCyclohexanone and cyclopentanone (Fluka-AG) sion, [15][16][17][18] and in phase-transfer catalysis. [19][20][21] The were distilled under a reduced pressure.…”

Section: Introduction Materialsmentioning

confidence: 99%

Effect of organized anionic surfactant system on the kinetics of V(V)-organic substrate-initiated polymerization of acrylonitrile

Sinha

1997

J. Appl. Polym. Sci.

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ABSTRACT:The kinetics of polymerization of acrylonitrile (AN) initiated by a V(V)-cyclohexanone redox system in the presence of a surfactant was studied over a temperature range of 30-50ЊC in acidic medium. The anionic surfactant sodium dodecyl sulfate (SDS) enhances the rate of polymerization (R p ) as well as rate of V(V) consumption (0R v ). The cationic surfactant, cetyltrimethylammonium bromide (CTAB), decreases both R p and 0R v , while the nonionic surfactant, Triton-X-100, has no effect on the rate. The change of concentration of the surfactant, monomer, acid, and cosolvent on the rate of polymerization were examined. Both R p and 0R v are computed in the presence of different organic substrates, i.e., cyclohexanone, cyclopentanone, glycerol, and citric acid. The viscosity-average molecular weight (M V v ) of the polycrylonitrile, obtained at different [SDS], was determined using the Mark-Howink relationship. A suitable mechanistic scheme was proposed for the process. EXPERIMENTAL INTRODUCTION MaterialsReviews of the literature indicate that an appreciable amount of work has been carried out on the Acrylonitrile (Sisco Chem.) was washed with 5% NaOH and 3% o-phosphoric acid and, finally, with kinetics of aqueous vinyl polymerization by V(V) water followed by drying over CaCl 2 . It was furwith an organic substrate by various workers.

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“…CTABr was purified according to the method of Duynstee and Grunwald. [33] SDS and SANa (Fluka) were used without further purification.…”

Section: Methodsmentioning

confidence: 99%

Supramolecular Assemblies as Promoters of Iodohydrin Formation

et al. 2004

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Finding alternative reaction media to replace polluting organic solvents is one aim of green chemistry. The ultimate green solvent, water, is the cheapest, non-toxic and most readily available reaction medium: three properties which make it an environmentally and economically attractive solvent. However, a fundamental problem in performing reactions in water is that many organic substrates are hydrophobic and not soluble in water. Several approaches are possible in solubilizing these compounds in aqueous media, one of which is carrying out reactions in aqueous solutions of surfactants at concentrations above their critical micellar concentration (cmc). Reactions of iodine with cyclohexene, 1-octene and styrene in water or in the presence of cationic surfactants do not give useful amounts of iodohydrins, but reactions in anionic surfactants give good yields. Iodohydrins are important functionalizable compounds and are readily prepared in the presence of sodium dodecyl sulfate (SDS) or sodium N-dodecanoyl sarcosinate (SANa). The critical conditions for these reactions were optimized with a rigorous statistical approach, the experimental design method. Use of these newly optimized reaction conditions gave high yields in short times for all of the alkenes examined. The use of anionic surfactants in water to form iodohydrins is a valid alternative to methods previously described

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Organic Reactions Occurring in or on Micelles. II. Kinetic and Thermodynamic Analysis of the Alkaline Fading of Triphenylmethane Dyes in the Presence of Detergent Salts¹

Cited by 78 publications

References 0 publications

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions

Effect of organized anionic surfactant system on the kinetics of V(V)-organic substrate-initiated polymerization of acrylonitrile

Supramolecular Assemblies as Promoters of Iodohydrin Formation

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Organic Reactions Occurring in or on Micelles. II. Kinetic and Thermodynamic Analysis of the Alkaline Fading of Triphenylmethane Dyes in the Presence of Detergent Salts1

Cited by 78 publications

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Microemulsions as a medium in chemical kinetics, II. The I− + S2O8= and crystal Violet + OH− reactions in different surfactant/oil/water microemulsions

Microemulsions as a medium in chemical kinetics, II. The I− + S2O8= and crystal Violet + OH− reactions in different surfactant/oil/water microemulsions

Effect of organized anionic surfactant system on the kinetics of V(V)-organic substrate-initiated polymerization of acrylonitrile

Supramolecular Assemblies as Promoters of Iodohydrin Formation

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Organic Reactions Occurring in or on Micelles. II. Kinetic and Thermodynamic Analysis of the Alkaline Fading of Triphenylmethane Dyes in the Presence of Detergent Salts¹

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions

Microemulsions as a medium in chemical kinetics, II. The I⁻ + S₂O₈⁼ and crystal Violet + OH⁻ reactions in different surfactant/oil/water microemulsions