Study Set Content:
Phase separation
Means Of Detecting Emulsion Type
Dilution test
Conductivity Test
Dye solubility test
Fluorescence test
addition of water/oil into the sample + visual check
Dilution test
use of water-soluble or oil-soluble dye
Dye solubility test
oil has property to absorb UV light
Fluorescence test
Colloidal dispersion
Gels
Colloidal dispersion
Magma
Two-phase gel system
Magma
macromolecules are uniformly distributed throughout a liquid with no apparent boundaries (single phase)
Gels
Also called milk
Magmas
usually inorganic
Magmas
Dispersions of small inorganic particles or large organic molecules enclosed or interpenetrated by liquid; usually organic
Gels
gel-sol formation
Thixotropy
taking up of liquid without measurable increase in volume
Imbibition
with increase in volume
Swelling
liquid is removed from gel and only the framework remains; example: gelatin sheets, tragacanth ribbons, and acacia tears
Xerogel
dispersing medium is “squeezed out” and the gel shrinks
Synergies
Preparation Of Gels And Magmas
Precipitation
● Direct hydratio
simple hydration
Bentonite magma, NF
5% bentonite, a native colloidal hydrated aluminum silicate, in purified water.
Bentonite magma, NF
