world of bubbles
it could be beautiful
it could be wild and passionate
or it could be tasteful and benevolent
bust some times……bubbles are like this:
they affect the productivity
they cause accidents
they contaminates the environment.
leave if you love bubbles
bubbles are made out of smaller bubbles. they are caused by the release a dispersed substance which are insoluble gasses in a liquid or solid.
pure water and pure surfactant are non-foaming,
but there is the presence of surfactants in the solution, once the gas and liquid have contact,
at the same time, foaming is faster than defoaming, then bubbles are created.
this picture below illustrate the creation of bubbles.
under the action of gravity and surface tension drainage, the bubble’s liquid film will thin up, which cause the bubble to brake.
the drainage speed has to be controlled because the faster it goes, the harder the liquid film will be, and there will be more bubbles.
which is not what we want.
-change the temperature so that the liquid evaporates or freezes
-drastic change of pressure
-centrifugal separation solution
-ultrasonic vibration and filtration, etc
-add defoaming agent
-change the ph
-add a chemical reagent that reacts with a foaming agent
3-add defoamer (common defaming strategies)
this picture shows how defoamers work
(silicone/polymer/mineral oil type defoamer)
4-polymer defoamer and usage
commonly used defoamer
now, do you understand the secret of defoaming?