Polyvinyl Alcohol

Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.

polyvinyl alcohol

[¦päl·i′vīn·əl ′al·kə‚hȯl]
(organic chemistry)
Water-soluble polymer made by hydrolysis of a polyvinyl ester (such as polyvinyl acetate); used in adhesives, as textile and paper sizes, and for emulsifying, suspending, and thickening of solutions. Abbreviated PVA.
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 It might be outdated or ideologically biased.

Polyvinyl Alcohol


a white solid polymer, [—CH2— CH(OH)—]n, having a degree of polymerization n up to 5,000 and containing as much as 68 percent crystalline phase in the form of microcrystalline formations. Polyvinyl alcohol is nontoxic.

The only practical solvent for polyvinyl alcohol is water. Polyvinyl alcohol does not dissolve in organic solvents and is especially resistant to the action of oils, fats, gasoline, and other hydrocarbons, as well as to the action of dilute acids and alkalies. In industry, polyvinyl alcohol is produced by the saponification of polyvinyl acetate in a methanol solution in the presence of strong acid and alkaline catalysts. Polyvinyl alcohol that contains up to 30 percent residual vinyl acetate monomeric units (solvars or soviols) can be obtained by controlling the degree of saponification.

Polyvinyl alcohol is used in the manufacture of fibers and films. It is also utilized as an emulsifier, thickener, and adhesive. Special brands of polyvinyl alcohol with low molecular weights are important in the food industry and medicine. They are used, for example, as plasma substitutes during blood transfusions and also in drug production.

World production of polyvinyl alcohol in 1973 was about 220,000 tons.


See references under .


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The Polyvinyl Alcohol (PVA) Films market report's pivotal part also includes the regional description that provides a complete analysis of its growth at a global level.
Thus, a method of formation of the proton exchange membrane using reasonable materials, polyvinyl alcohol and hydrated tin oxide obtained from the tin chloride and ammonium hydroxide is proposed.
"Absorption Coefficient of Polymers (Polyvinyl Alcohol) by Using Gamma Energy of 0.39MeV", Bulg.
All three of these branches were successfully embolized with polyvinyl alcohol.
Bacterial cellulose can be used in composite materials with xyloglucan or pectin (Astley et al., 2003), with lignosulfonate (Keshk, 2006; Keshk and Sameshima, 2006), with chitosan (Ciechanska, 2004), cellulose acetate butyrate (Gindl and Keckes, 2004), hydroxyapatite (Hung et al., 2006; Hutchens et al., 2006) and with polyvinyl alcohol especially for biomedical purposes.
Air Products and Chemicals, Inc., Allentown, PA, has published a new brochure highlighting its line of Airvol polyvinyl alcohol, which is useful for applications including inks, coatings, adhesives and textiles.
M2 PRESSWIRE-August 2, 2019-: Global Polyvinyl Alcohol (PVA) Market Analysis by End-use & Region (2014-2025)
Polyvinyl alcohol fibers are manufactured from polyvinyl alcohol resins.
Summary: Polyvinyl alcohol fibers are manufactured from polyvinyl alcohol resins.
Sekisui Specialty Chemicals, a company involved in polyvinyl alcohol products, is re-launching the Selvol Ultiloc series; a range of copolymers that expand on the functionality of industry trusted Selvol Polyvinyl Alcohol products.
Sekisui produces high-performance polyvinyl alcohol polymers and copolymers used in paper, adhesives, packaging, construction, personal care, and many other formulations.