It is the cross-linking within the fluid that gives a gel its structure (hardness) and contributes to the adhesive stick (tack). In this way, gels are a dispersion of molecules of a liquid within a solid medium. The word gel was coined by 19th-century Scottish chemist Thomas Graham by clipping from gelatine. [4]

Jan 16, 2020 · A gel is a sol in which the solid particles are meshed such that a rigid or semi-rigid mixture results. Cross-linking within the gel's polymer or colloidal network causes a gel to behave as a solid in its steady-state and makes it feel tacky.

The meaning of GEL is a colloid in a more solid form than a sol; broadly : jelly. How to use gel in a sentence.

Gel, coherent mass consisting of a liquid in which particles too small to be seen in an ordinary optical microscope are either dispersed or arranged in a fine network throughout the mass. A gel may be notably elastic and jellylike (as gelatin or fruit jelly), or quite solid and rigid (as silica

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Apr 20, 2020 · A gel is a colloidal system in which the dispersed phase is liquid and the dispersion medium is solid. e.g. when warm sol of gelatin is cooled, it sets to a semi-solid mass which is a gel.

Oct 23, 2022 · Gels are jelly-like colloidal systems in which a liquid is dispersed in a solid medium. Boot polish, cheese, jelly, curd, silica, etc. are some common examples of gel. Gels may be categorized into two types :

GEL definition: 1. a thick, clear, liquid substance, especially one used on the hair or body: 2. a substance…. Learn more.

Jun 1, 2018 · The term ‘gel’ is used to describe pretty much any material that is jelly-like (or jello-like for our American audience!). Gels are pretty common materials – many of us style our hair with hair gel, wash ourselves with shower gel, eat jelly babies and brush our teeth with gelatinous toothpaste afterwards.

a polymer network formed through glassy junction points, e.g., one based on block copolymers. If the junction points are thermally reversible glassy domains, the resulting swollen network may also be termed a thermoreversible gel; lamellar structures including mesophases, e.g., soap gels, phospholipids and clays;