Abstract Birefringence measurements of aqueous cellulose nanocrystal (CNC) suspensions are reported. Seven with concentrations between 0.7 and 1.3% per weight sheared in a Taylor-Couette type setting characterized using birefringent measurement technique based on linear polarized light acquisition polarization camera. Steady state shear rates up to 31 1/s show extinction angles 23°–40° birefrin...

We investigate phase separation and structural evolution in a complex food colloid (casein micelles) and biopolymer (xanthan) mixture using small-angle light scattering. We demonstrate that phase separation is induced by a depletion mechanism, and that the resulting coexistence curve can be described by osmotic equilibrium theory for mixtures of colloids and polymer chains in a background solve...

A new method of quantifying Candida spp. and Torulopsis glabrata suspensions, the spiral inoculation system, was studied to compare its accuracy, efficiency, and cost with the standard pour plating and spread plating methods. Concentrations of yeast suspensions ranging from 10(2) to 10(5) CFU were quantified simultaneously by the three methods. Linear regression analysis was used to determine t...

Abstract Mean-field homogenization is an established and computationally efficient method estimating the effective linear elastic behavior of composites. In view short-fiber reinforced materials, it important to homogenize consistently during process simulation. This paper aims comprehensively reflect expand basics mean-field anisotropic viscous properties show parallelism properties. particula...

A general method for computing the hydrodynamic interactions among N suspended particles, under the condition of vanishingly small particle Reynolds number, is presented. The method accounts for both near-field lubrication effects and the dominant many-body interactions. The many-body hydrodynamic interactions reproduce the screening characteristic of porous media and the ‘effective viscosity ’...

We have compared the combustion of the monopropellant nitromethane with that of nitromethane containing colloidal particles of functionalized graphene sheets or metal hydroxides. The linear steady-state burning rates of the monopropellant and colloidal suspensions were determined at room temperature, under a range of pressures (3.35-14.4 MPa) using argon as a pressurizing fluid. The ignition te...

The viscosity, g, of dilute aqueous suspensions of spherical polyelectrolyte brushes is discussed. The spherical polyelectrolyte brushes consist of a solid polystyrene core of 100-nm diameter onto which linear poly(acrylic acid) chains are grafted. The relative viscosity, g/gS (gS is the viscosity of the solvent) of these suspensions is studied as a function of shear rate in the presence of dif...

It is well known that a dilute suspension of spheroids sedimenting under gravity at low Reynolds number is unstable to density fluctuations as a result of hydrodynamic interactions D. L. Koch and E. S. G. Shaqfeh, J. Fluid Mech. 209, 521 1989 . Using a linear stability analysis, it is shown that a vertical density gradient in such a suspension can lead to a wave number selection by damping fluc...

Pulsed field gradient nuclear magnetic resonance and proton nuclear magnetic resonance relaxometry were used to study the self-diffusion coefficients and molecular dynamics of linear (PEGs) and spherical probes (dendrimers) in native phosphocaseinate suspensions and in a concentrated rennet gel. It was shown that both the size and the shape of the diffusing molecules and the matrix topography a...

The energy equation for turbulent flow of fiber suspensions was derived in terms of second order correlation tensors. Fiber motion of turbulent energy including the correlation between pressure fluctuations and velocity fluctuations was discussed at two points of flow field, at which the correlation tensors were the functions of space coordinates, distance between two points, and time.