Glass and Jamming Rheology in Soft Particles Made of PNIPAM and Polyacrylic Acid
نویسندگان
چکیده
منابع مشابه
Unified study of glass and jamming rheology in soft particle systems.
We explore numerically the shear rheology of soft repulsive particles at large volume fraction. The interplay between viscous dissipation and thermal motion results in multiple rheological regimes encompassing Newtonian, shear-thinning, and yield stress regimes near the "colloidal" glass transition when thermal fluctuations are important, crossing over to qualitatively similar regimes near the ...
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The shear rheology of soft particle systems becomes complex at large density because crowding effects may induce a glass transition for Brownian particles or a jamming transition for non-Brownian systems. Here we successfully explore the hypothesis that the shear stress contributions from glass and jamming physics are ‘additive’. We show that the experimental flow curves measured in a large var...
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Microfluidic rheology of soft colloids above and below jamming.
The rheology near jamming of a suspension of soft colloidal spheres is studied using a custom microfluidic rheometer that provides the stress versus strain rate over many decades. We find non-Newtonian behavior below the jamming concentration and yield-stress behavior above it. The data may be collapsed onto two branches with critical scaling exponents that agree with expectations based on Hert...
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ژورنال
عنوان ژورنال: International Journal of Molecular Sciences
سال: 2021
ISSN: 1422-0067
DOI: 10.3390/ijms22084032