Hydrated Cellulose

hydrated cellulose

[′hī‚drād·əd ′sel·yə‚lōs]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Hydrated Cellulose


one of the structural modifications of cellulose; it has the same chemical composition as natural cellulose but different properties. It is prepared from natural cellulose by precipitation from solution, by treating cellulose with concentrated (17-35 percent) alkali solutions and then separating the resultant alkaline cellulose, by esterification of the cellulose with subsequent saponification of the ester, or by mechanical milling of the cellulose.

During the formation of hydrated cellulose there is weakening of intermolecular bonds, and consequently also a change in the properties of natural cellulose. Hydrated cellulose is more hygroscopic than natural cellulose, and it has greater dyeability, solubility, and reactivity. The conversion of cellulose into its hydrate is one of the stages in making viscose fibers and cuprammonium fibers.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
It entails dispersing guar gum into a first aqueous medium comprising sorbitol to produce a first gellant dispersion including hydrated guar gum in a sorbitol solution; dispersing at least one cellulose polymer into a second aqueous medium to produce a second gellant dispersion including hydrated cellulose polymer in an aqueous solution; combining the first and second gellant dispersions to form a third gellant dispersion; and mixing the third gellant dispersion with a plurality of toothpaste components.
The use of cellulose phosphates for obtaining hydrated cellulose fibers produces viscose rayon with an improved ability to absorb a coloring agent (2-9 times) and a high coefficient of homogeneity of distribution of the coloring agent and low combustibility.