For my current research, I am sprinkling glass beads (micrometric or millimetric) on a water-air interface. As I am draining water from the container, the interface contracts and so does the particles on the interface. But a lot of the particles are also getting stuck on the container wall, possibly with a thin water film which clings to the wall. The same thing happens when I use a teflon container. Is there any way I can reduce the sticking or rather formation of a thin film on the side walls?
Alan F Rawle
Ranit Mukherjee
Some suggestions based on the fact that the important observation that the surfaces attract the particles and thus the zeta potential of the system is non-optimum:
- Alter the pH
- Use small quantity (say 200 - 2000 ppm) of a surfactant
- Change the liquid or add ethanol to the system
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