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 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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