How to choose and buy fatty alcohol polyoxyethylene ether

Today, I'd like to introduce some relevant information about the matters to be paid attention to in selecting emulsifier for us by Xiaobian. I hope it can help us to use it when we purchase and use it in the future. Please let's learn about the following content together with Xiaobian:

Emulsifier is the stabilizer of emulsion and a kind of surfactant. The function of emulsifier is: when it is scattered on the surface of lax substance, it forms a thin film or a double electric layer, which can make the lax phase with electric charge, so as to prevent the small droplets of the lax phase from coagulating each other, and make the emulsion formed more stable.

Emulsifier is a kind of organic compound that can make immiscible liquid form stable emulsion. Emulsifiers with different HLB values can prepare different types of emulsions. Selecting suitable emulsifiers is the fundamental guarantee for the effect. Due to the synergistic effect of the composite emulsifier, the composite emulsifier is usually used. However, when selecting the emulsifier, the difference between the high value and the low value of HLB should be considered, which should not be greater than 5, otherwise it will not be stable. Before taking part in the food system, it should be fully dispersed or dissolved in water or oil to make a slurry or emulsion.

Function and brief introduction of polymer emulsifier:

Polymer emulsifier is the stabilizer of emulsion and a kind of surfactant. The function of the polymer emulsifier is: when it is dispersed on the surface of the dispersing substance, it forms a thin film or a double electric layer, which can make the dispersing phase with electric charge, so as to prevent the small droplets of the dispersing phase from agglomerating with each other, and make the emulsion more stable. For example, a certain amount of high molecular emulsifier is added to the original drug (solid) or crude oil (liquid) of pesticide, and then they are dissolved in organic solvent. After they are mixed evenly, they can be made into transparent liquid, which is called emulsifiable oil. Common polymer emulsifiers include soap, gum Arabic, Sodium Alkylbenzene Sulfonate, etc.

Since the 1960s, people began to pay attention to the safety of surfactant application, and strengthened the research on non-toxic, biodegradable non-ionic polymer emulsifier. New polymer emulsifiers such as sorbitol fatty acid esters, phospholipids and glycolipids have been developed for the application of some polymer emulsifiers in food, cosmetics and medicine.

Since the 1980s, people have put forward higher requirements for multi-function, high purity, low stimulation and high efficiency of polymer emulsifiers, and developed more new polymer emulsifiers.

Nowadays, the varieties of emulsion have expanded from traditional oil in water and oil in water to multiple emulsion, non aqueous emulsion, liquid crystal emulsion, hair color emulsion, gel emulsion, phospholipid emulsion and liposome emulsion.