1/ TYPICAL ExAmples OF A MEASUREMENT WITH THE TRACKER :

Exemple 1 : SURFACE TENSION OF MELTED POLYMER AT 225°C

Exemple 2 : MEASUREMENT OF LOW INTERFACIAL TENSIONS AT THE OIL/WATER INTERFACE

Exemple 3 : COMPETITION BETWEEN TWO SURFACTANTS AT THE AIR/WATER INTERFACE

2/ Films OF EXPERIMENTS CARRIED OUT WITH THE TRACKER :

Each film shows a typical execution of a measurement of the dynamic interfacial tension carried out with the TRACKER, automated drop tensiometer designed for the measurement of the rheological parameters of the interfaces.

These films are about :

- the evolution of the interfacial visco-elastic modulus at the air/water interface during the adsorption of a surfactant (name : Modulus vs time)

- the adsorption kinetic of a surfactant at the oil/water interface (name : Adsorption kinetic)

- the determination of the interfacial visco-elastic modulus at the oil/water interface (name : Interfacial modulus)

HOW TO PLAY THE FILMS
Each film (GIF files) can be opened and automatically played either with Internet Explorer or Netscape. The duration of each film is about 3 to 4 minutes, depending on the performances of the computer. The first image is displayed during 10 seconds. The loading process is slow each file is about 1.3 to 1.9 MO.