In the strict context of colloidal rheology, what is the precise scientific term for the completely reversible, isothermal phase transition where a semi-rigid non-Newtonian Gel rapidly liquefies into

Question

In the strict context of colloidal rheology, what is the precise scientific term for the completely reversible, isothermal phase transition where a semi-rigid non-Newtonian Gel rapidly liquefies into a Sol upon mechanical shaking, and spontaneously sets back into a Gel upon resting?

Prashant Kotian · Accepted Answer

Correct answer: C. Thixotropy is the unique rheological property exhibited by certain colloidal gels (like commercial paints or ferric hydroxide gels) where applied mechanical shear stress disrupts the 3D network, causing a severe viscosity drop to form a fluid sol, which strictly reversibly rebuilds when the shear is removed.

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