Understanding thixotropic and antithixotropic behavior of viscoelastic micellar solutions and liquid crystalline dispersions. I. The model

Bautista, F.; Santos, Jenifer; Puig, J. E.; Manero, Ο.

doi:10.1016/s0377-0257(98)00081-0

Cited by 144 publications

(127 citation statements)

References 21 publications

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“…An example of a constitutive equation which describes these processes is the BMP equation of state. This equation [Bautista et al 1999;Manero et al 2002] is written here in terms of a stress superposition according to: are scalars that reflect changes in viscosity due to changes in the structure induced by flow. β i =k i λ i can be interpreted as an inverse of the energy associated to www.intechopen.com…”

Section: Bmp Constitutive Equationmentioning

confidence: 99%

See 1 more Smart Citation

PET-MMT and PET-PEN-MMT Nanocomposites by Melt Extrusion

Calderas¹,

Sánchez-Olivares²,

Herrera‐Valencia³

et al. 2011

Advances in Nanocomposites - Synthesis, Characterization and Industrial Applications

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Section: Bmp Constitutive Equationmentioning

confidence: 99%

“…For a mono modal model ( ) 1 i = , the BMP [Bautista et al 1999Soltero 1999Escalante et al 2007;Calderas et al 2009;Herrera et al 2009Herrera et al , 2010 model is defined by the following equations: …”

Section: Pet-mmt and Pet-pen-mmt Nanocomposites By Melt Extrusion 111mentioning

confidence: 99%

PET-MMT and PET-PEN-MMT Nanocomposites by Melt Extrusion

Calderas¹,

Sánchez-Olivares²,

Herrera‐Valencia³

et al. 2011

Advances in Nanocomposites - Synthesis, Characterization and Industrial Applications

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“…In numerical studies, flow analyses for wormlike micelle solutions using continuum constitutive equations, such as the diffusive Johnson-Segalman model [13][14][15][16][17] , the Giesekus model [18][19][20] , and Bautista-Manero models [21][22][23][24][25] were performed. In continuum constitutive equations, the behavior of microscopic or mesoscopic network structures of micelles are not explicitly described.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Shear Banding Flow of Wormlike Micelle Solutions between Parallel Channels using a Network Scission Model

Yamamoto

Sawa

2011

J. Soc. Rheol., Jpn

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Shear banding emerges in shear flows of wormlike micelle solutions and is observed as band velocity profiles in velocity measurement experiments. In our previous experiments, multi-band velocity profiles were captured in shear flows of a CTAB/NaSal solution between parallel plates. The relationship between the band velocity profile and the micellar network structure is an interesting issue. In the present study, the orientation behavior of the micelle network was numerically analyzed using a network scission model. Brownian dynamics simulations were carried out for a twospecies model of micelle networks derived in the Vasquez-Cook-McKinley model. The numerical results indicate that the effect of the orientation of short micelles on the behavior of the entire system is small, whereas long micelles tend to align well in the flow direction, their degree of orientation is relatively high, and their orientation behavior strongly affects the orientation of the entire system. Numerical analysis using the BD simulation provides useful information on the flow-induced structures of the micelle network, and hence the present approach is effective for the analysis of the mechanism of shear banding.

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“…[19][20][21] Employing these constitutive equations, we can numerically predict the flow behavior of a fluid that has a non-monotonic flow curve, which is a typical property of wormlike micellar solutions. The continuum approach is effective to analyze the flow behavior that originates from macroscopic rheological properties of micellar solutions even though it cannot predict microscopic behavior of micelles.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Startup Flows of Wormlike Micellar Solutions in an Axisymmetric Capillary Channel using a Modified Bautista-Manero Model

Yamashita

Yamamoto

Hashimoto

2009

J. Soc. Rheol., Jpn

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Startup flows of wormlike micellar solutions in an axisymmetric capillary channel were numerically studied using a modified Bautista-Manero (MBM) model as a constitutive equation. The values of model parameter of the MBM model decided for a CTAB/NaSal solution were employed. The velocity profile at steady state predicted by the numerical simulation agreed with corresponding experimental data. The present study treated startup flows at a constant pressure gradient, which corresponds to a stress-controlled-type flow. The flow rate increased with time until the flow reached a steady state. The velocity profile had an inflection point around which the velocity gradient rapidly changed. The position of inflection point slightly changed with time. Temporal changes in both fluidity and the micellar contribution to shear stress occurred within a wall side region of the inflection point, where a white turbidity phenomenon was observed in our previous experiments. These temporal responses are characteristic of the startup flow at constant pressure gradients.

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Understanding thixotropic and antithixotropic behavior of viscoelastic micellar solutions and liquid crystalline dispersions. I. The model

Cited by 144 publications

References 21 publications

PET-MMT and PET-PEN-MMT Nanocomposites by Melt Extrusion

PET-MMT and PET-PEN-MMT Nanocomposites by Melt Extrusion

Numerical Analysis of Shear Banding Flow of Wormlike Micelle Solutions between Parallel Channels using a Network Scission Model

Numerical Simulation of Startup Flows of Wormlike Micellar Solutions in an Axisymmetric Capillary Channel using a Modified Bautista-Manero Model

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