Surface shear rheology of adsorption layers from the protein HFBII hydrophobin: Effect of added β-casein

Research output: Contribution to journalArticlepeer-review

Standard

Surface shear rheology of adsorption layers from the protein HFBII hydrophobin : Effect of added β-casein. / Radulova, Gergana M.; Golemanov, Konstantin; Danov, Krassimir D.; Kralchevsky, Peter A.; Stoyanov, Simeon D.; Arnaudov, Luben N.; Blijdenstein, Theodorus B.J.; Pelan, Eddie G.; Lips, Alex.

In: Langmuir, Vol. 28, No. 9, 06.03.2012, p. 4168-4177.

Research output: Contribution to journalArticlepeer-review

Harvard

Radulova, GM, Golemanov, K, Danov, KD, Kralchevsky, PA, Stoyanov, SD, Arnaudov, LN, Blijdenstein, TBJ, Pelan, EG & Lips, A 2012, 'Surface shear rheology of adsorption layers from the protein HFBII hydrophobin: Effect of added β-casein', Langmuir, vol. 28, no. 9, pp. 4168-4177. https://doi.org/10.1021/la205113w

APA

Radulova, G. M., Golemanov, K., Danov, K. D., Kralchevsky, P. A., Stoyanov, S. D., Arnaudov, L. N., Blijdenstein, T. B. J., Pelan, E. G., & Lips, A. (2012). Surface shear rheology of adsorption layers from the protein HFBII hydrophobin: Effect of added β-casein. Langmuir, 28(9), 4168-4177. https://doi.org/10.1021/la205113w

Vancouver

Radulova GM, Golemanov K, Danov KD, Kralchevsky PA, Stoyanov SD, Arnaudov LN et al. Surface shear rheology of adsorption layers from the protein HFBII hydrophobin: Effect of added β-casein. Langmuir. 2012 Mar 6;28(9):4168-4177. https://doi.org/10.1021/la205113w

Author

Radulova, Gergana M. ; Golemanov, Konstantin ; Danov, Krassimir D. ; Kralchevsky, Peter A. ; Stoyanov, Simeon D. ; Arnaudov, Luben N. ; Blijdenstein, Theodorus B.J. ; Pelan, Eddie G. ; Lips, Alex. / Surface shear rheology of adsorption layers from the protein HFBII hydrophobin : Effect of added β-casein. In: Langmuir. 2012 ; Vol. 28, No. 9. pp. 4168-4177.

Bibtex

@article{e4d2f302ab4743f0bf747482b667d13c,
title = "Surface shear rheology of adsorption layers from the protein HFBII hydrophobin: Effect of added β-casein",
abstract = "The surface shear rheology of hydrophobin HFBII adsorption layers is studied in angle-ramp/relaxation regime by means of a rotational rheometer. The behavior of the system is investigated at different shear rates and concentrations of added β-casein. In angle-ramp regime, the experimental data comply with the Maxwell model of viscoelastic behavior. From the fits of the rheological curves with this model, the surface shear elasticity and viscosity, E sh and η sh, are determined at various fixed shear rates. The dependence of η sh on the rate of strain obeys the Herschel-Bulkley law. The data indicate an increasing fluidization (softening) of the layers with the rise of the shear rate. The addition of β-casein leads to more rigid adsorption layers, which exhibit a tendency of faster fluidization at increasing shear rates. In relaxation regime, the system obeys a modified Andrade's (cubic root) law, with two characteristic relaxation times. The fact that the data comply with the Maxwell model in angle-ramp regime, but follow the modified Andrade's low in relaxation regime, can be explained by the different processes occurring in the viscoelastic protein adsorption layer in these two regimes: breakage and restoration of intermolecular bonds at angle-ramp vs solidification of the layer at relaxation.",
author = "Radulova, {Gergana M.} and Konstantin Golemanov and Danov, {Krassimir D.} and Kralchevsky, {Peter A.} and Stoyanov, {Simeon D.} and Arnaudov, {Luben N.} and Blijdenstein, {Theodorus B.J.} and Pelan, {Eddie G.} and Alex Lips",
year = "2012",
month = mar,
day = "6",
doi = "10.1021/la205113w",
language = "English",
volume = "28",
pages = "4168--4177",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "9",

}

RIS

TY - JOUR

T1 - Surface shear rheology of adsorption layers from the protein HFBII hydrophobin

T2 - Effect of added β-casein

AU - Radulova, Gergana M.

AU - Golemanov, Konstantin

AU - Danov, Krassimir D.

AU - Kralchevsky, Peter A.

AU - Stoyanov, Simeon D.

AU - Arnaudov, Luben N.

AU - Blijdenstein, Theodorus B.J.

AU - Pelan, Eddie G.

AU - Lips, Alex

PY - 2012/3/6

Y1 - 2012/3/6

N2 - The surface shear rheology of hydrophobin HFBII adsorption layers is studied in angle-ramp/relaxation regime by means of a rotational rheometer. The behavior of the system is investigated at different shear rates and concentrations of added β-casein. In angle-ramp regime, the experimental data comply with the Maxwell model of viscoelastic behavior. From the fits of the rheological curves with this model, the surface shear elasticity and viscosity, E sh and η sh, are determined at various fixed shear rates. The dependence of η sh on the rate of strain obeys the Herschel-Bulkley law. The data indicate an increasing fluidization (softening) of the layers with the rise of the shear rate. The addition of β-casein leads to more rigid adsorption layers, which exhibit a tendency of faster fluidization at increasing shear rates. In relaxation regime, the system obeys a modified Andrade's (cubic root) law, with two characteristic relaxation times. The fact that the data comply with the Maxwell model in angle-ramp regime, but follow the modified Andrade's low in relaxation regime, can be explained by the different processes occurring in the viscoelastic protein adsorption layer in these two regimes: breakage and restoration of intermolecular bonds at angle-ramp vs solidification of the layer at relaxation.

AB - The surface shear rheology of hydrophobin HFBII adsorption layers is studied in angle-ramp/relaxation regime by means of a rotational rheometer. The behavior of the system is investigated at different shear rates and concentrations of added β-casein. In angle-ramp regime, the experimental data comply with the Maxwell model of viscoelastic behavior. From the fits of the rheological curves with this model, the surface shear elasticity and viscosity, E sh and η sh, are determined at various fixed shear rates. The dependence of η sh on the rate of strain obeys the Herschel-Bulkley law. The data indicate an increasing fluidization (softening) of the layers with the rise of the shear rate. The addition of β-casein leads to more rigid adsorption layers, which exhibit a tendency of faster fluidization at increasing shear rates. In relaxation regime, the system obeys a modified Andrade's (cubic root) law, with two characteristic relaxation times. The fact that the data comply with the Maxwell model in angle-ramp regime, but follow the modified Andrade's low in relaxation regime, can be explained by the different processes occurring in the viscoelastic protein adsorption layer in these two regimes: breakage and restoration of intermolecular bonds at angle-ramp vs solidification of the layer at relaxation.

UR - http://www.scopus.com/inward/record.url?scp=84857834376&partnerID=8YFLogxK

U2 - 10.1021/la205113w

DO - 10.1021/la205113w

M3 - Article

C2 - 22320311

AN - SCOPUS:84857834376

VL - 28

SP - 4168

EP - 4177

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 9

ER -