Chemistry Corner – Emulsification & Dispersion

What is Emulsification?

Emulsification is the distribution (or dispersion) of one incompatible liquid within another. Emulsification undergoes a process of dispersing one liquid (containing the bioactive compounds) in a second immiscible liquid, by applying electrostatic, or hydrophobic, or hydrogen bonding interactions between the bioactive compounds and an encapsulating material. Read More

Chemistry Corner: Detergency

Detergency is defined as the ‘cleansing quality/power’ in a process that involves water and energy (mechanical or thermal). Detergent surfactants are water-soluble cleansing assistants that combine with impurities and dirt to make them more soluble and differs from soap in not forming a scum with the salts in hard water. Energy is required to facilitate the removal of dirt from a surface, therefore the role of surfactants is to reduce the energy required to achieve cleaning. Read More

Chemistry Corner – Foaming

A foam is produced by the distribution of a gas in a liquid. Without a surfactant to stabilise the foam, the liquid and gas would quickly separate causing the foam to collapse. This is primarily caused by drainage of liquid within the film, which causes thinning and the eventual collapse of the foam. Surfactants therefore act at the liquid, gas, or solid gas interface to stabilise foam to reduce surface tension.   Read More