Information AboutCellulose Triacetate |
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It is similar chemically to Cellulose Acetate , with the distinguishing characteristics being that in triacetate, according to the Federal Trade Commission definition, at least "92 percent of the hydroxyl groups are acetylated". During the manufacture of triacetate the cellulose is completely acetylated whereas in regular cellulose acetate or cellulose diacetate, it is only partially acetylated. Triacetate is significantly more heat resistant than cellulose acetate. HISTORY Triacetate was first produced commercially in the U.S. in 1954 by Celanese Corporation [http://www.celanese.com]. A subsidiary of Celanese, Celanese Acetate [http://www.celaneseacetate.com], still produces the fibre. PRODUCTION Triacetate is derived from cellulose by combining cellulose with acetate from Acetic Acid and Acetic Anhydride . The cellulose acetate is Dissolve d in a mixture of Dichloromethane and Methanol for Spinning . As the filaments emerge from a Spinneret , the solvent is Evaporate d in warm air, in a process known as dry spinning, leaving a fibre of almost pure triacetate. A finishing process called S-Finishing or surface Saponification is sometimes applied to acetate and triacetate fabrics using a Sodium Hydroxide solution. This removes part or all of the Acetyl Group s from the surface of the fibres leaving them with a cellulose coating. This reduces the tendency for the fibres to acquire Static . CHEMISTRY CAS Number 9012-09-3 AS A FIBRE Triacetate fibres have a crenular {Link without Title} cross section. Characteristics
Usage Scenarios Particularly effective in clothing where crease or pleat rentention is important, such as skirts and dresses General Care Tips Always refer to individual garmet care labels
AS A FILM Characteristics
Usage Scenarios
SEE ALSO REFERENCES
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