[Terminology] Dispersion system
Time: 2021-10-17 11:55:03; Reading: 0

[Terminology] Dispersion system

Dispersion system consists of dispersed phase and dispersion medium (continuous phase).

 

Dispersion system can be divided into:

(1), Coarse dispersion system

The particle size is greater than 100nm or 1000nm.

(2), Colloidal system

The particle size is between 1 - 100nm or 1 - 1000nm.

Polymer true solution also belongs to colloidal system.

(3), True solution system

The particle size is less than 1nm.

 

Table 1 Some names of dispersion system

Dispersion medium

Dispersed phase

System name

Gas

Gas

No dispersion system

Gas

Liquid

Fog (Aerosol)

Gas

Solid

Smoke (Aerosol)

Liquid

Gas

Foam

Liquid

Liquid

Emulsion

Liquid

Solid

Sol

Gel*

Solid

Gas

Solid foam

Solid

Liquid

Solid emulsion

Solid

Solid

Solid dispersion

*: It is generally believed that the gel is a bicontinuous phase structure, and the dispersed phase is a three-dimensional interconnected structure.