Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where J.H.H. Bongaerts is active.

Publication


Featured researches published by J.H.H. Bongaerts.


Journal of Colloid and Interface Science | 2009

Nanotribology, standard friction, and bulk rheology properties compared for a Brij microemulsion

Malgorzata Graca; J.H.H. Bongaerts; Jason R. Stokes; Steve Granick

A microemulsion consisting of Brij 96, glycerol (co-surfactant), oil, and water was compared as concerns deformations in a surface forces apparatus whose surface where rendered hydrophobic by coating with a monolayer of condensed OTE (octadecyltriethoxysilane), as concerns tribology of the conventional kind during sliding between hydrophobic PDMS surfaces, and as concerns bulk rheology. In the bulk, light scattering characterization showed swollen spherical micelles with a 13 nm diameter. When squeezed to form thinner films than this, the effective viscosity measured rose by orders of magnitude. It appears that thin films in the range of thickness 13 to 7 nm are comprised of deformed micelles and that confinement to thinner films expels micelles with concomitant even more drastic structural deformation of the remaining micelles, until the thinnest films retain only adsorbed surfactant. Tentatively, this may explain why the friction response then became similar to that of surfactant itself [M. Graca, J.H.H. Bongaerts, J.R. Stokes, S. Granick, J. Colloid Interface Sci. 315 (2007) 662]. These measurements are considered to be the first comparison of microemulsion rheology in the bulk and in nanometer-thick films.


Xvth International Congress On Rheology - the Society of Rheology 80Th Annual Meeting, Pts 1 and 2 | 2008

From Rheology to Tribology: Multiscale Dynamics of Biofluids, Food Emulsions and Soft Matter

Jason R. Stokes; Georgina A. Davies; Lubica Macakova; Gleb E. Yakubov; J.H.H. Bongaerts; D. Rossetti

Many soft matter systems undergo shear and confinement at length scales approaching that of their underlying microstructure. We focus here on our developments in micro‐gap rheometry and soft‐tribology/biolubrication for probing the dynamics of multiphase complex fluids and biofluids from the macro‐ to the nano‐scale. In particular, we highlight how narrow‐gap rheometry can be used to determine the elasticity of weakly‐elastic low‐viscosity fluids and for characterizing ultra‐low sample volumes of biofluids, and that the boundary friction between rubbing hydrophobic compliant substrates is dependent on the rheology and hydration of the adsorbed species. The presentation will also highlight recent developments in high‐speed visualization in rheological and tribological contacts.


Tribology International | 2007

Soft-tribology: Lubrication in a compliant PDMS–PDMS contact

J.H.H. Bongaerts; K. Fourtouni; Jason R. Stokes


Tribology Letters | 2007

The Lubricating Properties of Human Whole Saliva

J.H.H. Bongaerts; D. Rossetti; Jason R. Stokes


Food Hydrocolloids | 2009

Astringency of tea catechins: More than an oral lubrication tactile percept

D. Rossetti; J.H.H. Bongaerts; E. Wantling; Jason R. Stokes; Ann-Marie Williamson


Langmuir | 2009

Viscous boundary lubrication of hydrophobic surfaces by mucin.

Gleb E. Yakubov; James McColl; J.H.H. Bongaerts; Jeremy J. Ramsden


Journal of Colloid and Interface Science | 2007

Friction and adsorption of aqueous polyoxyethylene (Tween) surfactants at hydrophobic surfaces.

Malgorzata Graca; J.H.H. Bongaerts; Jason R. Stokes; Steve Granick


Biomacromolecules | 2009

Low Biofouling Chitosan-Hyaluronic Acid Multilayers with Ultra-Low Friction Coefficients

J.H.H. Bongaerts; Justin J. Cooper-White; Jason R. Stokes


Biotribology | 2015

Tribology of particle suspensions in rolling-sliding soft contacts

Gleb E. Yakubov; T.E. Branfield; J.H.H. Bongaerts; Jason R. Stokes


Archive | 2008

Aeratable and aerated products

J.H.H. Bongaerts; Philip Alan Houston; Jason R. Stokes

Collaboration


Dive into the J.H.H. Bongaerts's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar

D. Rossetti

University of Bedfordshire

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Lubica Macakova

University of Bedfordshire

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

James McColl

University of Cambridge

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge