WebAug 18, 2024 · If a mixture of two immiscible or partially miscible liquids is shaken, a coarse dispersion of one liquid in the other is obtained which is called emulsion. Example: Paints, Cell Fluids Types of Emulsions There are two types of emulsions. Oil Dispersed in Water (O/W type) Water acts as a dispersion medium in this type of system. WebJan 23, 2012 · A dispersing agent is a non-ionic surfactant such as an alkyl-polyethyleneglycol. These are used to impart the leveling effect as well as to keep the dye in dispersed form, to avoid the dye aggregation and precipitation. It helps to increase dye solubility. Generally naphthalene sulphonic acid– formaldehyde condensate, lignin …
PHYSICAL PHARMACEUTICS II COARSE DISPERSION
The substance which is dispersed as very fine particles in a solution is called the dispersed phase. In a colloidal solution, a dispersed phase is suspended in the dispersion medium. A colloid solution does not possess a uniform mixture. It means that the particles of the dispersed phase are present in the … See more On the basis of the dispersed phase type, colloids are classified into various types that include sol, emulsion, foam and aerosol. 1. Sol – Sol is a colloidal suspension of solid particles in a liquid. For example, Ruby … See more Based on the nature of the minute particles of the dispersed phase, the colloids are mainly divided into three types: 1. Multimolecular colloids 2. Macromolecular Colloids 3. Associated Colloids Let’s … See more The system in which the distributed particles of one material are dispersed in a continuous phase of another material is known as a … See more Dispersion systems are of two types: 1. Molecular Dispersions – Molecular dispersions are referred to as solutions to a solute phase in the solvent. In this type of solution, the dispersed phase is homogeneously … See more WebAug 30, 2024 · An emulsion is a dispersion of a liquid as globules in. each other. • Example: dispersion of oil in water or dispersion of water in oil. small as 0.01 µm and as large as 100 µm are possible in some emulsions. emulsions with large globules are referred to as coarse emulsions. bam bam nba
14. COARSE DISPERSION.pdf - PHYSICAL PHARMACY PHAR2312...
WebDifferentiate between lyophilic and lyophobic colloids and identify examples of each. ... or a coarse dispersion depending on the particle size of the dispersed solid. In true … WebAug 9, 2012 · Coarse Dispersion. 2172 Views Download Presentation. Coarse Dispersion. Emulsion. Emulsions are Mixtures of oily substances & aqueous substances, stabilized by an emulsifier . The suspended … WebApr 8, 2024 · Examples of molecular dispersion are air (consisting of various gasses like nitrogen and oxygen), electrolytes, and alloys. The second type of dispersion medium is of the coarse kind. These are heterogeneous dispersed systems. Fast sedimentation of the dispersed phase is observed owing to the coarse dispersions, mainly due to gravity. bam bam niño