Flow curve analysis

Objective of the analysis

Flow curve analysis allows for the evaluation of a product's rheological behavior under various shear stresses. It provides information on the dynamic viscosity, fluidity, thixotropy, and plasticity of a fluid, suspension, or semi-solid product. It is an essential tool in formulation, quality control, and industrial process optimization.

It allows, in particular, to:

• Characterize the complete rheological profile of a fluid (viscosity vs. shear curve)
• Determine if a fluid is Newtonian, pseudoplastic, dilating, or plasticizing
• Identify a yield threshold or a phase transition
• Studying the stability of a product's structure (thixotropy, hysteresis)
• Compare formulations or track the evolution of a product over time

Methodology

The sample is subjected to increasing and decreasing shear stresses in a rheometer. A flow curve , allowing observation of the product's response to these stresses.

• Speed-controlled or stress-controlled mode
• Measurements at fixed or variable temperature
• Cone-plane cells, concentric geometry or parallel plates depending on the nature of the sample

Affected matrices

• Cosmetics: creams, gels, lotions, pastes, clays
• Foods: sauces, purees, jams, dairy products
• Pharmaceutical products: syrups, ointments, semi-solid excipients
• Technical products: adhesives, paints, inks, liquid polymers

Industrial applications

• Controlling the texture or stability of a product
• Packaging optimization (filling, pumping, extrusion)
• Development of formulations with targeted application properties
• Studies of aging or physical stability
• Validation of a functional specification (fluidity, consistency)

Why choose YesWeLab?

YesWeLab connects you with laboratories specializing in applied rheology. Our partners have state-of-the-art equipment (rotary rheometers, high-sensitivity sensors) to perform customized analyses under real-world conditions. You can specify the shear ranges, temperature, or kinetics required for your studies.

Our platform allows you to quickly order your analyses, track the status of samples, and receive results interpreted according to your quality or R&D requirements.

Useful related analyses :

• Viscosity analysis
• Consistency analysis