1 edition of Gels in some soap stabilised emulsions. found in the catalog.

Gels in some soap stabilised emulsions.

accountability with a human face? : report and commentary on aSchools Council conference held at Stoke Rochford Hall, 23-26 February 1981

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Published by Administrator in Brighton Polytechnic Department of Pharmacy

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    • Brighton Polytechnic Department of Pharmacy

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      • Thesis (Ph.D) - CNAA, 1980.

        StatementBrighton Polytechnic Department of Pharmacy
        PublishersBrighton Polytechnic Department of Pharmacy
        LC Classifications1980
        The Physical Object
        Paginationxvi, 76 p. :
        Number of Pages77
        ID Numbers
        ISBN 10nodata

        nodata File Size: 10MB.

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Gels in some soap stabilised emulsions. by Brighton Polytechnic Department of Pharmacy Download PDF EPUB FB2

The sol itself is overall electrically neutral like any other solution.

Colloids sols emulsions gels foams water

First Gels in some soap stabilised emulsions. solvent evaporate to leave the oil, binding agent and pigment particles. Butter and margarine are water-in-oil emulsions. One way to inhibit the two layers settling out, or at least to slow down coagulation of the fine droplets of the liquids, is to use an emulsifier - a chemical agent that facilitates emulsification and promote emulsion stability.

is attracted to water and weakly bonds with water molecules. : A consists of one substance or mixture of substances very finely dispersed in another substance or a mixture of substances without a new true solution forming. Each oil droplet will have millions of oil molecules in it. This is NOT a true solution. Diagram B represents an emulsion of oil droplets dispersed in water oil in water emulsion.

completely homogeneous in the same phase. Similarly, most colloid particles are too small to be filtered, but separation from truly dissolved substances is possible with a membrane. The oil is the disperse phase and the water is the continuous phase. and this explains why aluminium sulphate Al 2 SO 4 3 is used to precipitate coagulate colloidal clay in water treatment for domestic water supplies.

a well shaken soap solution or shaving cream foam. Emulsions are thicker than either liquid e. 'Older' traditional paints and 'artists oil paint' are oil-based colloidal emulsions. Air is whipped or whisked into cream to give it a soft frothy texture to use as a topping.

This means neighbouring colloid particles have the same 'outer charge' and so are repelled, rather than attracted together. Much of the oil spill can be contained by booms and pumped off the surface of the water - but not all unfortunately.

iii Mayonnaise-salad cream is a mixture of oil, water, emulsifier and other ingredients. Note: So far the discussion has been confined to hydrophobic 'water hating' colloids which do NOT interact strongly with the continuous phase. Detergents are also emulsifiers, and not just used for washing in the home, they are used to help disperse oil spilt from tankers into rivers, seas and oceans.

In the case of paints, these colloids consist of tiny particles of pigment dispersed in some kind of continuous liquid technically this mixture is called a sol, a 'runny' paint.