• 
  • Mission
  • History
  • Formulaction USA

• 
  • MLS Multiple Light Scattering
  • DWS Diffusing Wave Spectroscopy

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  • Stability
  • Microrheology
  • Microrheology for drying and curing

• 
  • Presentation
  • Ageing & characterisation
  • Multi-Sampler
  • Preformulation
  • Heavy Crude Oil
  • Process Monitoring

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  • Presentation
  • In Bulk
  • For Drying Curing

Microrheology
in bulk:
Rheolaser™ LAB

The first ready to use instrument to perform passive Microrheology analysis for soft materials.

MULTI-EXPERIMENTS ANALYSER

EVALUATION

• Viscoelastic fluids can be characterised by plotting the viscous and elastic modulus at a chosen frequency (1 Hz for instance) or versus frequencies
• Analysis of the Microstructure: Mesh size, Relaxation time...

EVOLUTION
Multiple experiments can be performed with the same sample versus time as it is a non destructive method:
Evolution of G’µR ,G’’µR, TR µR... versus time
Measurement of the perfect gel point by plotting G’’µR /G’µR at several frequencies versus time.
Evolution of the polymer mesh size versus time
Evolution of the viscoelastic properties versus the pH, temperature…



STRUCTURE RECOVERY / THIXOTROPY
After shearing, automatic plot of:
G’µR ,G’’µR at rest versus time at a one or several frequencies.
Relaxation time TR µR kinetics



STABILITY
At low frequency the position of the storage modulus G’µR versus the loss modulus G’’µR enables to predict the stability of the material.

MAIN ADVANTAGES

• Measurement at REST
• Microstructure characterisation
• Easy to use: one click experiment.
• Non intrusive measurement.

EASY TO OPERATE : FROM SAMPLE HANDLING TO DATA REPORTING

EASY SAMPLING
Material is sampled in a disposable glass cell:

Easy to handle

No evaporation

Easy storage

Easy to clean

EASY SAMPLE PROCESSING
The Sample is loaded in one of the 6 storage positions:

One click measurement

No apparatus set up

No geometry configuration

No need to determine the Linear ViscoElastic Region (LVER)

EASY DATA PROCESSING
Automatic plot of:

• Decorrelation curve d2
• Particle Mean Square Displacement MSD
• Viscous modulus G’’µR versus frequencies
• Elastic modulus G’µR versus frequencies
• Relaxation time, Macroscopic viscosity, Gp’µR (Generalized Maxwell model)

All frequencies are available from MSD data

• Up to 5 decades
• No torque effect
• No slipping effect
• No motor inertia

A NEW WAY TO ANALYSE VISCOELASTIC PRODUCTS

Rheolaser™LAB is the first ready to use instrument to perform passive Microrheology analysis for soft materials and measure viscoelastic properties at rest. This instrument combines the advantages of Microrheology with the benefits of optical measurement by MS-DWS*

Rheolaser™LAB is dedicated to both experts and non-experts in Microrheology.

Automatic plot of microrheological parameters of the material : Elasticity, viscosity, relaxation time…

Automatic plot of particle Mean Square Displacement (MSD) or decorrelation curve (d2)

* Multi Speckle-Diffusing Wave Spectroscopy


APPLICATION FIELDS

• Cosmetic
• Pharmaceutical
• Food
• Paint
• Polymers
• Ink