Measurement of behaviors at interfaces

Understanding adhesion, wetting, capillarity and interfacial interactions

On interfaces play a key role in the behavior of complex formulations and materials : foams, emulsions, gels, suspensions, films, adhesives, polymers, cosmetic, food or pharmaceutical products.

At Rheonis, we develop tailor-made measurement services to characterize, quantify and interpret interfacial phenomena, directly linked to your industrial challenges.

Why measure behaviors at interfaces?

The control of physical properties at interfaces is decisive for:

  • la industrial processing (mixing, coating, deposition, printing, coating, granulation)

  • la stability and durability (coalescence, demixing, aging, migrations)

  • la functional performance (adhesion, wetting, sensory comfort, cohesion)

  • theproduct innovation (unique textures, smart coatings, hybrid materials)

On interfaces are often the weak link : they determine robustness, durability and the final user experience.

Physics measurement services at interfaces

Measurement of wetting and contact angle

Characterization of liquid/solid interaction

Study of deposition, spreading and impregnation conditions

Interfacial tension and energy

Surface and interfacial tension measurements (air/liquid, liquid/liquid, solid/liquid)

Analysis of surfactants, stabilizers and functional additives

Measurement of interfacial adhesion and cohesion

Quantification of adhesion forces on various supports (skin, polymers, metals, biomaterials, composites)

Assessment of cohesion in multiphase systems

Interfacial dynamics and aging

Monitoring of coalescence, demixing and instability phenomena

Measurement of changes under mechanical, thermal or chemical constraints

Interfacial and rheological coupling

Studies rheology – tribology – interface to link friction, texture and stability

Application to unstable emulsions, fragile gels, dynamic foams

Rheonis' added values

  • Unique expertise in complex formulations and materials (emulsions, foams, gels, films, suspensions, polymers, composites)

  • Development of specific measurement protocols, adapted to your products and processes

  • Multi-physical coupling : interfaces, rheology, tribology, texture, mechanics

  • Solution-oriented approach : transforming measurement into a tool for formulation, optimization and innovation

  • Multi-sector experience : cosmetics, food industry, pharmaceuticals, biomaterials, materials chemistry

Industrial sectors

  • Cosmetics & care : stability of emulsions, spreading of creams, sensory comfort
  • Food : texture in the mouth, stability of foams and emulsions, oral perception
  • Pharmaceutical & Biomedical : patch adhesion, gel cohesion, controlled dispersion
  • Inks, paints & varnishes : wetting, adhesion, spreading, homogeneity of deposits
  • Materials & Polymers : composite films, adhesives, coatings, coverings
  • ...