Surfactant

solutions resulted in a lower apparent viscosity of foam within porous media. For N85 surfactant solution, foam generation was unsuccessful up to 10 PV of SAG injections. After oil bank production, the rate of foam collapse may have been much higher than that of foam generation that resulted in no pressure build up and therefore stable foam did not propagate through porous media. The addition of polymer into N85 surfactant solution slightly increased the apparent viscosity and resulted in N85-PEF propagation

The swelling agent used in this case is 1,2,3-Trimethyl benzene and the mineralizing agent is ammonium fluoride. The silica source used is tetra ortho silicate (TEOS) and these mixture is used in acidic conditions. In this method the surfactant P-123 was diluted by a strong acid i.e. 1.6M HCL and was stirred in a stirrer for 1 hour at 40oC followed by the addition of swelling agent and the mineralizing and this mixture was further stirred for 20 hours under the same condition. Then the

various hydrophobic/lipophilic drugs and to improve the oral bioavailability of poorly absorbed drugs 11, 33. The SDLFs contain oil and a surfactant mixture into which the drug is incorporated. They emulsify when mixed with aqueous environment. The self-emulsification process is specific for the particular pair of oil and surfactant, surfactant concentration, oil/surfactant ratio, and the temperature at which self-emulsification occurs. After self-dispersion, the drug is rapidly distributed throughout the

solutions (as low as 10- 10 mole/liter), it is worth being applied as modern separation and purification techniques. Particulates that are to be separated from solution are associated with surfactants and are adsorbed at the liquid air interface. Interaction energy between the nonpolar hydrocarbon chains of the surfactant and the polar water molecules is less than the interaction energy between water molecules themselves leading to organic molecules in bulk water to be energetically less favorable than

showen in fig 5. Molecular structure of CAPB : Fig 5 (CAPB) is a mixture of closely related organic compounds derived from coconut oil and dimethyl amino propyl amine.[ 63] CAPB is available as a viscous pale yellow solution and it is used as a surfactant in personal care products. The name reflects that the major part of the molecule, the lauric acid group, is derived from coconut oil. CAPB is a fatty acid amide containing a long hydrocarbon chain at one end and a polar group at the other. This

characterization has been increased due to its property in which it can used as a agent in enhanced oil recovery properties, and also useful in a broad spectrum of potential application (Banat et al., 2010). Biosurfactants are effective like other synthetic surfactants, the main advantage of this compounds are more biodegradable, it reduces the pollutant load and it is also less sensitive to the extreme pH, temperature,

focused and ensure all of the requirements are being met. 1. Introductory Paragraph: Define key words and phrases What are surfactants? Surfactants are chemicals that reduce the surface tension between two liquids such as water and oil. It connects both polar and non-polar molecules. Surfactants contain both a water-loving head and oil-loving tail. What do they do? – Surfactants lower the surface tension of a liquid. They change the properties of materials. Examples: Sodium lauryl sulfate, ammonium

Polysorbates 20 and 80 (Tween 20 and Tween 80) are utilized as a part of formulation of biotherapeutic products for both preventing surface adsorption and as stabilizers against protein aggregation. The polysorbates are amphipathic, nonionic surfactants made out of fatty acid esters of polyoxyethylene sorbitan being polyoxyethylene sorbitan monolaurate for polysorbate 20 and polyoxyethylene sorbitan monooleate for polysorbate 80. The polysorbates used in the formulation of biopharmaceuticals are

Introduction Laundry detergents are a cleansing agent that is widely used in the industry to clean laundry. The term “detergent” refers to mixtures of chemical compounds including Alkyl Sulphonates, which are similar to soap but less affected by hard water (Farlex, 2014). Like soap, detergent increases the ability of water to penetrate fabric and break down greases and dirt, however they are derived from organic acids rather than fatty acids (Mifflin, 2005). A detergent is an ion or molecule that

In recent years, a great deal of interest has been focussed on lipid based carrier systems. The most popular approach is the incorporation of the active poorly water soluble component into inert lipid vehicles such as oils, surfactant dispersions, solid dispersions, solid lipid nanoparticles, emulsions, micro emulsions, Nano emulsions, self-emulsifying formulations (SEF), micro/nanoemulsifying formulations, and liposomes. The essential component of activity by which a lipid formulation prompts enhanced