Emulsion polymerization of styrene in a continuous Taylor vortex flow reactor

Kataoka, Kunio; Ohmura, Naoto; Kouzu, Masato; Simamura, Yosiharu; Okubo, Masayoshi

doi:10.1016/0009-2509(94)00515-s

Cited by 106 publications

(57 citation statements)

References 11 publications

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“…Most work on this problem, however, has been limited to either homogeneous single phase fluids with no applied axial flow (for exceptions, see Refs. [3][4][5]) or to liquid-solid systems [6,7]. Little is known about the effects on the hydrodynamic structure of adding a second immiscible liquid phase in the presence of an applied axial flow, even though such systems are employed as liquid-liquid extraction devices with high interphase mass-transfer efficiencies [8][9][10].…”

Section: Department Of Chemical Engineering Iowa State University Amentioning

confidence: 99%

Spatiotemporal Patterns in Liquid-Liquid Taylor-Couette-Poiseuille Flow

Campero

Vigil

1997

Phys. Rev. Lett.

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Section: Department Of Chemical Engineering Iowa State University Amentioning

confidence: 99%

Spatiotemporal Patterns in Liquid-Liquid Taylor-Couette-Poiseuille Flow

Campero

Vigil

1997

Phys. Rev. Lett.

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“…In an extruder, the Couette flow state can be found in the gap between the rotating cylindrical screw and the surrounding cylindrical cage. Actually, the rather simple principle of Couette flow provides a tremendous range of applications, e.g., in lubricants in sleeve bearings, for blood dialysis in medical science [1][2][3], emulsion polymerization [34], polymerization of blends [39] etc. For experimental investigations of effects of shear flow on polymeric solutions and bicontinuous microemulsions we refer to [37].…”

Section: Couette Flowmentioning

confidence: 99%

A variational approach to the decomposition of unstable viscous fluids and its consistent numerical approximation

Anders

Weinberg

2011

Z Angew Math Mech

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The mixing and de-mixing properties of highly viscous fluids can be described as a diffusive system driven by an external velocity field. In order to analyze the micro-morphological evolution with a diffusion theory of heterogeneous mixtures we apply a Cahn-Hilliard phase-field model, which is here extended by a convective term. As the model is based on an energetic variational formulation, we state the underlying energy minimizing principles. For consistent finite element analysis we provide a piecewise smooth and globally C 1 -continuous approximation by means of rational B-spline basis functions. Numerical examples exhibit the physical properties of the model. Simulations of phase decomposition and coarsening controlled by diffusion and by convection show the robustness and the versatility of our approach.

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“…Appearance of pairs of counter-rotating Toroidal vortices called Taylor vortices due to hydrodynamic instability provides a minimal axial dispersion combined with a local mixing intensity in a TCFR. In this sense, a TCFR has the potential for an ideal plug-low reactor with low shear stress [4], which is suitable for processes dealing with shear-sensitive materials such as crystallizations [5], emulsion polymerization [6], bioprocesses [7] and so on.…”

Section: Introductionmentioning

confidence: 99%

Dynamical Particle Motions in Vortex Flows

Wang¹,

Ohmura²

2017

Vortex Dynamics and Optical Vortices

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Circular vortex lows generate interesting self-organizing phenomena of particle motions, that is, particle clustering and classiication phenomena. These phenomena result from interaction between vortex dynamics and relaxation of particle velocity due to drag. This chapter introduces particle clustering in stirred vessels and particle classiication in Taylor vortex low based on our previous research works. The irst part of this chapter demonstrates and explains a third category of solid-liquid separation physics whereby particles spontaneously localize or cluster into small regions of luids by taking the clustering phenomena in stirred vessels as an example. The second part of this chapter discusses particle classiication phenomena due to shear-induced migration. Finally, this chapter discusses about process intensiication utilizing these self-organizing phenomena of particle motions in vortex lows.

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Emulsion polymerization of styrene in a continuous Taylor vortex flow reactor

Cited by 106 publications

References 11 publications

Spatiotemporal Patterns in Liquid-Liquid Taylor-Couette-Poiseuille Flow

Spatiotemporal Patterns in Liquid-Liquid Taylor-Couette-Poiseuille Flow

A variational approach to the decomposition of unstable viscous fluids and its consistent numerical approximation

Dynamical Particle Motions in Vortex Flows

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