2021
DOI: 10.1063/5.0035599
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Air bubbles play a role in shear thinning of non-colloidal suspensions

Abstract: Shear thinning of non-colloidal suspensions involving multi-scaled air bubbles is studied. It is observed that the presence of bubbles significantly affects the transition and equilibrium rheological behavior. Large bubbles enhance shear thinning of the system by increasing the particle loading at low shear rates, whereas nano-bubbles suppress shear thinning by introducing additional repulsive interactions between smooth solid spheres, which also hinder the shear thinning of the polymeric matrix at high shear … Show more

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Cited by 7 publications
(2 citation statements)
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“…In conclusion, we have presented the rheological properties of oblate particle suspensions for a considerable range of volume fraction and aspect ratio. Other than these two parameters, there could be numerous other factors in determining the rheology which have been studied recently [34][35][36][37] for spherical particle suspensions. Investigating these effects for non-spherical particle suspensions, as well as extending the simulations to even denser suspensions, could be avenues for future research.…”
Section: (B)mentioning
confidence: 99%
“…In conclusion, we have presented the rheological properties of oblate particle suspensions for a considerable range of volume fraction and aspect ratio. Other than these two parameters, there could be numerous other factors in determining the rheology which have been studied recently [34][35][36][37] for spherical particle suspensions. Investigating these effects for non-spherical particle suspensions, as well as extending the simulations to even denser suspensions, could be avenues for future research.…”
Section: (B)mentioning
confidence: 99%
“…However, whether it is batch or continuous physical foaming, it will be a very complicated process that involves many different variables and phenomenon. This is because not only the process conditions but also the bubbles will significantly affect the flow properties of the matrix 148 and bubble growth. Moreover, the adjacent bubbles will affect the behavior of each other, 149 such that bubbles can also interact with solid particles, [150][151][152][153] bottom floor, 154 and a free surface.…”
Section: Effects Of Temperature and Pressurementioning
confidence: 99%