Viscose fiber | Properties, Chemical composition | Uses of Viscose fiber

 

Viscose fiber

Viscose fiber

Viscose fiber is a regenerated natural fiber that is produced from cellulose fiber. In other words, viscose fiber is a semi-synthetic type of rayon fabric made from wood pulp that is used as a silk substitute, as it has a similar drape and smooth feel to the luxury material. The molecular structure of the viscose is the same as that of cotton and linen, except that the molecular chains are shorter and do not form as many small crystals. Many types and grades of viscose fibers can mimic the feel and texture of natural fibers such as silk, wool, cotton, and linen. Fiber is used to make textiles for clothing and other needs.

Viscose fabric

Viscose fiber properties

Viscose fiber properties are two types, such as-

a. Physical properties

i. Viscose fiber is a regenerated natural fiber that is made from cellulosic wood pulp.

ii. The drape and slipperiness of viscose textiles are often more like nylon.

iii. The hand feels and texture of viscose like silk, wool, cotton, and linen.

iv. Viscose fibers are easily dyed in a wide range of colors.

v. Viscose fabrics are soft, smooth, cool, comfortable, and highly absorbent.

vi. The durability and appearance retention of regular viscose is low, especially when wet.

vii. Viscose has the lowest elastic recovery of any other fiber.

viii. Regular viscose has lengthwise lines called striations and its cross-section is an indented circular shape.

ix. Staple fibers range from 1.5 to 15 deniers and are mechanically or chemically crimped.

x. Viscose fibers are naturally very bright.

xi. Moisture Regain 11-13%

xii. It becomes weak when it is heated above 150 °C.

b. Chemical properties

 i. Viscose is damaged by strong acids but it is moderate with weak acids.

ii. It has good resistance to weak alkali but strong alkali damage the viscose.

iii. Strong oxidizing agents damage the viscose fiber.

iv. It has a high ability to protect various solvents.

v. Mildew damage the viscose fiber.

vi. Various insects attacked the viscose fiber.

Chemical composition of Viscose fiber

Cellulose - 6.5%,

Sodium hydroxide -7.5%

Bound sulfur -2.5%

Water – 83 %

Impurities - 0.5

Uses of Viscose fiber

i. Viscose uses in apparel like accessories, blouses, dresses, jackets, lingerie, linings, sport shirts, sportswear, ties, work clothes

ii. It uses in home furnishings such as bedspreads, blankets, curtains, draperies, sheets, slipcovers, tablecloths, upholstery

iii. It has industrial uses like industrial products, medical-surgical products, nonwoven products, tire cords.

iv. It is used in making umbrella cloths and protective cloths.

v. It is used for sewing embroidery threads and in making a special type of rope yarn.

vi. It blends with cotton for reducing cost.

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