Polymerization Coupled To Oscillating Reactions:  (1) A Mechanistic Investigation of Acrylonitrile Polymerization in the Belousov−Zhabotinsky Reaction in a Batch Reactor

Washington, Randy P.; West, William W.; Misra, Gauri P.; Pojman, John A.

doi:10.1021/ja990743o

Cited by 51 publications

(64 citation statements)

References 22 publications

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“…These peculiar species can be properly exploited to initiate radical polymerization reaction. 13,14 Surfactants. Some of the difficulties related to the use of biological membranes can be bypassed by employing aggregated systems based on surfactants, 15 i.e., micelles, vesicle, and microemulsions.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Response of a Batch BZ Oscillator to the Addition of the Anionic Surfactant Sodium Dodecyl Sulfate

2007

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The response of the Belousov-Zhabotinsy (BZ) system to the addition of increasing amounts of the anionic surfactant sodium dodecyl sulfate (SDS) was monitored at 25.0°C in stirred batch conditions. The presence of SDS in the reaction mixture influences the oscillatory parameters, i.e., induction period and oscillation period, to an extent that depends on the surfactant concentration. The experimental results have shown that the induction period increases slightly on increasing surfactant concentration and, then, a further increase in the [SDS] leads to an enhancement while the oscillation period increases monotonously on increasing SDS concentration. It has been proposed that the response of the oscillatory BZ system to the addition of SDS is due to the peculiar capability of the organized surfactant assemblies to affect the reactivity by selectively sequestering some key reacting species. Indeed, explanations of the experimental results have been given on the basis of the role played by the micellar shape, which in turn dictates the hydrophobic nature. The suggested perturbation effects have been supported by performing viscosity measurements on the aqueous SDS solutions and by the spectrophotometric estimation of the binding constant of the bromine species to the micellar aggregates. This study has indirectly corroborated the existence of two kind of micelles and unambiguously revealed that the bromine species show a different affinity toward the spherical and rod-like micelles.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Response of a Batch BZ Oscillator to the Addition of the Anionic Surfactant Sodium Dodecyl Sulfate

2007

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“…the system that is similar to a proposed chemical multivibrator [40,41], which is an alternative to the Oregonator model (45,46) of the Belousov oscillating reaction.…”

Section: Third Modelmentioning

confidence: 99%

Models for Oscillating Polymerization: Activation by Product in a System with Flow

Katime

Ortiz

Morales

et al. 2014

Int J of Chemical Kinetics

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In this work, four polymerization mechanisms with flow are proposed where sustained oscillation can be present: (1) Polyaddition initiated by radicals produced by initiator decomposition, which is catalyzed by the polymer, first-order termination, a polymer disappears by a reaction with a third substance and by leaving the system in the exit flow. (2) Polycondensation where the polymer has catalytic activity upon H to produce a monomer, first-order termination and a monomer disappears by a reaction with a third substance, and there is exit flow for all the species. (3) Polycondensation with catalytic activity of the polymer upon A to produce a monomer, first-order termination, conformational transitions of the polymers, one of the polymer conformations disappears by a reaction with a monomer and exit flow for all the species. (4) Polycondensation combined with polyaddition where the polycondensation polymer product has catalytic activity on the monomer, first-order termination and exit flow of all the species. C

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“…2, 3 Yoshida et al created a self-oscillating polymer gel by coupling a pH-sensitive hydrogel with a reaction that oscillates in pH. 4 Yoshida et al have also created interesting dynamical systems based on the Belousov-Zhabotinsky oscillating reaction in a copolymer gel that consisted of poly(N-isopropyl acrylamide) with ruthenium tris(2,2 0 -bipyridine) (Ru(bpy) 2þ 3 ) pendent to the polymer chains.…”

Section: Introductionmentioning

confidence: 99%

Time‐lapse thiol‐acrylate polymerization using a pH clock reaction

Bounds

Taylor

2010

J. Polym. Sci. A Polym. Chem.

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Polymerization Coupled To Oscillating Reactions: (1) A Mechanistic Investigation of Acrylonitrile Polymerization in the Belousov−Zhabotinsky Reaction in a Batch Reactor

Cited by 51 publications

References 22 publications

Nonlinear Response of a Batch BZ Oscillator to the Addition of the Anionic Surfactant Sodium Dodecyl Sulfate

Nonlinear Response of a Batch BZ Oscillator to the Addition of the Anionic Surfactant Sodium Dodecyl Sulfate

Models for Oscillating Polymerization: Activation by Product in a System with Flow

Time‐lapse thiol‐acrylate polymerization using a pH clock reaction

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