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Interparticle attraction controls flow heterogeneity in calcite gels.
Soft Matter ( IF 2.9 ) Pub Date : 2020-09-04 , DOI: 10.1039/d0sm01079k
Teresa Liberto 1 , Marie Le Merrer 2 , Sébastien Manneville 3 , Catherine Barentin 4
Affiliation  

We couple rheometry and ultrasonic velocimetry to study experimentally the flow behavior of gels of colloidal calcite particles dispersed in water, while tuning the strength of the interparticle attraction through physico-chemistry. We unveil, for the first time in a colloidal gel, a direct connection between attractive interactions and the occurrence of shear bands, as well as stress fluctuations.

中文翻译:

颗粒间的吸引力控制了方解石凝胶中的流动异质性。

我们结合流变学和超声测速法,以实验方式研究分散在水中的方解石胶体凝胶的流动行为,同时通过物理化学调节粒子间吸引力的强度。我们首次在胶体凝胶中揭示了有吸引力的相互作用与剪切带的出现以及应力波动之间的直接联系。
更新日期:2020-09-14
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