微乳液和N之间的区别是什么anoemulsion

The微乳液和纳米乳液之间的关键区别is that microemulsions are thermodynamically stable, whereas nanoemulsions are thermodynamically unstable.

Microemulsion and nanoemulsion are two different types of emulsions. An emulsion is a fine dispersion of minute droplets of one liquid in another in which it is notsoluble or miscible。We can describe an emulsion as a mixture of two liquids that are immiscible with each other. An emulsion is a type of胶体。我们通常倾向于互换使用两个术语乳液和胶体，但是术语乳液专门解释了形成胶体的两种液体的混合物。

内容

1.Overview and Key Difference
2.什么是微乳液
3.What is Nanoemulsion
4.Microemulsion vs Nanoemulsion in Tabular Form
5.Summary – Microemulsion vs Nanoemulsion

什么是微乳液?

Microemulsion is a clear, stable isotropic liquid that contains a mixture of oils, water, and surfactant. It is a thermodynamically stable liquid often consisting of a cosurfactant. The aqueous phase of this microemulsion contains salts and other ingredients, whereas the oil phase of this microemulsion contains a complex mixture of various烃compounds. In comparison to ordinary emulsions, these microemulsions are created upon the simple mixing of components. In other words, it does not require high shear conditions that are generally useful in the formation of ordinary emulsions. There are three major types of microemulsions: direct microemulsion, reversed microemulsion, and biocontinuous microemulsion.

此外，在微乳液的水相和油相存在下，微乳液中的表面活性剂分子倾向于在油相和水相之间的界面上产生单层。表面活性剂分子具有hydrophobic溶解在石油阶段的尾巴。它也有hydrophilic头组溶解在水相中。

There are several important applications of microemulsions, which include dry cleaning processes, floor polishing processes, as cleaners, as ingredients in personal care products, in pesticide formulations, as cutting oils, and as components in some drugs.

What is Nanoemulsion?

纳米乳液is also known as miniemulsion and is a special case of emulsion. This type of emulsion is created when shearing a mixture comprising of two immiscible liquid phases along with one or more surfactants and also a cosurfactant.

When preparing a nanoemulsion, we can use two general methods: high-energy methods and low-energy methods. The high-energy processes use the technique of exposure to a high-power ultrasound of the mixture. Or else, we can use a high-pressure homogenizer. When considering the low-energy miniemulsion production, we can first make a water-oil emulsion which is then transformed into an oil-in-water miniemulsion through the changing of either the composition of the mixture or the temperature of the mixture.

In contrast to microemulsions, nanoemulsions are thermodynamically unstable. However, they are kinetically stable. Thermodynamical instability arises due to the fact that oil and water are incompatible in nature; hence, the interface between these two phases is not favored. However, the presence of the surfactant and cosurfactant can suppress this fact. In addition to that, we can obtain stable droplets having dimensions between 50 to 500 nm due to the presence of surfactants.

微乳液和N之间的区别是什么anoemulsion?

Microemulsion is a clear, stable isotropic liquid that contains a mixture of oils, water, and surfactant. It is a thermodynamically stable liquid often consisting of a cosurfactant. Nanoemulsion is also named miniemulsion and is a special case of emulsion. The key difference between microemulsion and nanoemulsion is that microemulsions are thermodynamically stable, whereas nanoemulsions are thermodynamically unstable.

以下信息图显示了与表格形式的微乳液和纳米乳液之间的差异，以与并排比较。

Summary – Microemulsion vs Nanoemulsion

Microemulsion and nanoemulsion are two different types of emulsions. The key difference between microemulsion and nanoemulsion is that microemulsions are thermodynamically stable, whereas nanoemulsions are thermodynamically unstable.

Reference:

1. Jaiswal, Manjit, et al. “纳米乳液: An Advanced Mode of Drug Delivery System。”3 Biotech, Springer Berlin Heidelberg, Apr. 2015.

Image Courtesy:

1.“”Emulsion formation” cruithne9 - 自己的工作(CC BY-SA 4.0)via Commons Wikimedia