Complex liquid: understanding, measuring and controlling

On complex liquids – suspensions, emulsions, gels, colloidal solutions – often exhibit non-linear and multi-physical behaviors. Their handling and performance depend on parameters such as viscosity, stability, structuring and phase interactions.

At Rheonis, we support manufacturers in the characterization, optimization and control complex liquids to ensure the quality, performance and durability of your products and processes.

Our services for complex liquids

Rheonis offers a comprehensive approach, ranging from measurement to industrial support:

Rheological characterization of complex liquid

viscosity, elasticity, shear behavior and oscillation.

Analysis of structure and microstructure of complex liquid

Particle organization, phase interactions.

Complex liquid stability study

Sedimentation, phase separation, coalescence, flocculation.

Optimization of complex liquid formulations

Concentration adjustment, surfactants, polymers and additives.

Process support for complex liquids

Agitation, pumping, filling, mixing and transporting.

Support for innovation for complex liquids

Development of new formulations, pilot tests and multi-physics interpretation.

Measurements and analyses for complex liquids

To understand and anticipate the behavior of complex liquids, Rheonis mobilizes:

• Rheology and flow : viscosity measurements, storage/loss modulus, creep.
• Physical chemistry : pH, conductivity, zeta potential, interfacial interactions.
• Dynamic behaviors and interfaces: response to process constraints (agitation, shearing, pumping).
• Stability properties : turbidity, sedimentation, phase separation, coalescence.
• Microstructural analysis : optical observation, imaging and particle distribution.

Industrial applications

Complex liquids are at the heart of many sectors:

• Cosmetics : creams, lotions, gels and emulsions for skin and hair.
• Food : sauces, fortified drinks, functional suspensions.
• Pharmaceutical : liquid formulations, drug suspensions, gels.
• Chemistry and materials : paints, inks, varnishes, functional coatings.
• Technical industry : complex lubricants, fluids with specific properties.

Associated industrial processes

• Mixing and stirring
• Pumping and fluid transfer
• Filling and packaging
• Homogenization and emulsification
• Heat treatment and stability control

Rheonis added values

• Interdisciplinary expertise : rheology, physical chemistry, mechanics and tribology.
• Tailor-made approaches adapted to specific formulations and processes.
• Performance optimization : stability, processability, texture and sensoriality.
• Strategic support : product innovation, industrialization and sustainability.

Useful links

• Complex fluid (Wikipedia)
• Case study: problem solving in enamel spraying
• Case study: development of an ink drying test bench for writing
• Case study: R&D support in methods for special inks

Would you like to discuss your issues directly with our specialists? Do not hesitate to leave us a message, we will respond within 48 hours maximum.