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Article Dans Une Revue Langmuir Année : 2010

Rheology of Hydrate Forming Emulsions

Prasad U Karanjkar
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Jeffrey F Morris
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Résumé

Results are reported on an experimental study of the rheology of hydrate forming water-in-oil emulsions. Density matched concentrated emulsions were quenched by reducing the temperature and an irreversible transition was observed where the viscosity increased dramatically. The hydrate forming emulsions have characteristic times for abrupt viscosity change dependent only on the temperature, reflecting the importance of the effect of sub-cooling. Mechanical transition of hydrate-free water-in-oil emulsions may require longer times, and depends on the shear rate, occurring more rapidly at higher rates but with significant scatter which is characterized through a probabilistic analysis. This rate dependence together with dependence on sub-cooling reflects the importance of hydrodynamic forces to bring drops or particles together.
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Dates et versions

hal-02143110 , version 1 (29-05-2019)

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Jorge Peixinho, Prasad U Karanjkar, Jae Ki Lee, Jeffrey F Morris. Rheology of Hydrate Forming Emulsions. Langmuir, 2010, 26 (14), pp.11699-11704. ⟨10.1021/la101141j⟩. ⟨hal-02143110⟩

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