Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Cleaning and Detergency

In the case of drycleaning, the aqueous medium is replaced by a nonaqueous medium (such as tetrachloroethylene). Tetrachloroethylene can dissolve grease from materials that should not be treated by water. Since there is also polar dirt (such as sugars, minerals, etc.), a small amount of water needs to be added. This leads to the [Pg.67]

FIGURE 3.20 Change in detergent solution properties as related to CMC (schematic). [Pg.68]

Ancient Egyptians are known to have spread very small amounts of olive oil over the water while their ships were sailing into harbors. Because this oil was known to appreciably calm the waves, navigation into the harbors was made easier. [Pg.69]

If one places a very small amount of a lipid on the surface of water, it may affect surface tension in different ways. It may not show any effect (such as in the case of cholesterol), or it may show a drastic decrease in surface tension (such as in the case of stearic acid or tetra-decanol). An amphiphile molecule will adsorb at the [Pg.69]

FIGURE 4.1 Monolayer film balance barrier and surface pressure. [Pg.70]


Spring, S. November 1974. "Cleaning and Detergency." Metal Finishing. [Pg.46]

Solid-vapor Solid-liquid Liquid-vapor Liquid-liquid Adsorption, catalysis, contamination, gas-liquid chromatography Cleaning and detergency, adhesion, lubrication, colloids Coating, wetting, foams Emulsions, detergency, tertiary oil recovery... [Pg.9]

Water cleaning and detergent cleaning will not remove deep embedded soils in the pores of the concrete surfaces. In addition, these methods saturate the concrete, which then requires a drying period (not always practical). [Pg.168]

The start-up phase of a cooling system when cleaning and detergent treatments must be scheduled to prevent unwanted deposits. [Pg.206]

Consumer attitudes toward and expectations of foaming products most of the time involve psychological fectors induced by advertising or guided by previous experiences. Foam can translate hedonic benefits (luxury, care, sensory/sensuality) or functional benefits like cleaning and detergency efficacy sometimes, foam must be suppressed or completely avoided. [Pg.420]

Uses Film-former for cleaning and detergent prods. [Pg.72]

Many modem technologies depend on the optimum use of surfactants. The applied concentrations are often above the critical micelle concentration (CMC) and special effects are direcdy related to the presence of micelles. This is tme for example in cleaning and detergency [1], encapsulation of drugs in micelles (2, 3] or microemulsions [4], and many others [5]. The important parameters of micellar solutions are the CMC and the aggregation number n. The formation and dissolution of aggregates or the release or incorporation of single molecules are controlled by the relaxation times of slow and fast processes. Their values, however, depend on the models applied. [Pg.247]

The technological, environmental, and biological importance of adsorption from solution onto a solid surface can hardly be overestimated. The impact of such phenomena on our everyday lives is evident in such areas as foods and food science, agriculture, cosmetics, pharmaceuticals, mineral ore froth flotation, cleaning and detergency, the extraction of petroleum resources, lubrication, surface protection, and the use of paints and inks. Each of these applications, and many more, would be difficult if not impossible in the absence of the effects of adsorbed surfactants and stabilizers at the solid-liquid interface. [Pg.323]


See other pages where Cleaning and Detergency is mentioned: [Pg.521]    [Pg.67]    [Pg.67]    [Pg.452]    [Pg.590]    [Pg.878]    [Pg.461]    [Pg.458]    [Pg.1092]    [Pg.1491]    [Pg.122]    [Pg.592]    [Pg.331]    [Pg.2095]    [Pg.193]   


SEARCH



Detergents and detergency

Surfactants and cleaning (detergency)

© 2024 chempedia.info