Thekey differencebetween colloid and emulsion is thatcolloid can form when any state of matter (solid, liquid or gas) combine with a liquid whereas emulsion has two liquid components which are immiscible with each other.
A colloid is a mixture of a化合物(that is in solid, liquid or gas state) and a liquid. An emulsion is a form of colloid. A colloid generally contains two components; a continuous phase and a discontinuous phase. The discontinuous phase distributes throughout the continuous phase.
内容
1.Overview and Key Difference
2.What is Colloid
3.What is Emulsion
4.Side by Side Comparison – Colloid vs Emulsion in Tabular Form
5.概括
What is Colloid?
胶体是一种均匀的非结晶物质,由大分子或一种通过第二种物质分散的一种物质的超显微颗粒组成。The dispersed particles do not settle down spontaneously because colloids are very stable.
There are several different categories of colloids that are grouped based on different parameters. The four major categories are as follows:
- Sol– a colloidal suspension which has solid particles distributed in a liquid
- Emulsion – a colloidal suspension containing a combination of two liquids
- 泡沫 - 当气体被困在液体或固体中时,这种形成
- Aerosol – forms when solid or liquid particles distribute throughout the air
In addition, there are three forms of colloids; multimolecular colloids, macromolecular colloids, and micelles. This classification categorizes colloids according to the particle size and behavior of those particles in a colloid. A multimolecular colloid forms if the molecules of a compound aggregate when we dissolve the compound in a suitable solvent. In a macromolecular colloid, the individual particles are large enough to call this a colloid. In micelles, it contains an aggregate of molecules in a colloidal solution, such as those formed by detergents (in a circular manner).
What is Emulsion?
乳液是一种液体的细小液滴的精细分散,在另一种液体中,它是不可溶或混溶的。Therefore, it is a mixture of two liquids which are immiscible with each other. They are a type of colloids. Although these two terms are in use interchangeably, the term emulsion specifically explains the mixture of two liquids that form a colloid.

图01:乳液的形成
An emulsion has two phases; a continuous phase and a discontinuous phase. The discontinuous phase distributes throughout the continuous phase. If the continuous phase is water, then the colloid is a hydrocolloid. The boundary between the two liquid in an emulsion is the “interface”.
An emulsion has a cloudy appearance. That is because it has phase interfaces that can scatter a light beam which passes through the emulsion. When all the light rays are scattered equally, an emulsion appears as a white liquid.
What is the Difference Between Colloid and Emulsion?
Colloid vs Emulsion |
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胶体是一种均匀的非结晶物质,由大分子或一种通过第二种物质分散的一种物质的超显微颗粒组成。 | 乳液是一种液体的细小液滴的精细分散,在另一种液体中,它是不可溶或混溶的。 |
组件 | |
A colloid can form when any state of matter (solid, liquid or gas) combine with a liquid. | An emulsion has two liquid components that are immiscible with each other. |
摘要 - 胶体与乳液
An emulsion is a form of a colloid. Other forms of colloids include sol, foam and aerosols. The difference between colloid and emulsion is that a colloid can form when any state of matter (solid, liquid or gas) combine with a liquid whereas an emulsion has two liquid components which are immiscible with each other.
Reference:
1.库。“胶体。”Chemistry libretexts,库文本,2017年1月9日。Available here
2. “Emulsion.” Wikipedia, Wikimedia Foundation, 30 Apr. 2018.Available here
Image Courtesy:
1.’Emulsions’ By Fvasconcellos 14:24, 17 April 2007 (UTC) – Own work, (Public Domain) viaCommons Wikimedia
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