Cellulose fiber
Encyclopedia
Cellulose fibers are fibres of cellulose
Cellulose
Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to over ten thousand β linked D-glucose units....

 from any source, either natural or manufactured.

Textile

In the textile industry regenerated cellulose is used as fiber
Fiber
Fiber is a class of materials that are continuous filaments or are in discrete elongated pieces, similar to lengths of thread.They are very important in the biology of both plants and animals, for holding tissues together....

s such as rayon
Rayon
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber. Rayon is known by the names viscose rayon and art silk in the textile industry...

, (including modal
Modal (textile)
Modal is a cellulose fiber made by spinning reconstituted cellulose, often from beech trees. It is about 50% more hygroscopic per unit volume than cotton. It takes dye like cotton and is color-fast when washed in warm water. Modal is a kind of rayon.Textiles made from modal are resistant to...

, and the more recently developed Lyocell
Lyocell
Lyocell is a regenerated cellulose fiber made from dissolving pulp . It was first manufactured in 1987 by Courtaulds Fibres UK at their pilot plant S25...

). Cellulose fibers are manufactured from dissolving pulp
Dissolving pulp
Dissolving pulp is a bleached wood pulp that has a high cellulose content . It is produced chemically from the pulpwood, in a process that has a low yield...

. Cellulose-based fibers are of two types, regenerated or pure cellulose such as from the cupro-ammonium process and modified cellulose such as the cellulose acetate
Cellulose acetate
Cellulose acetate , first prepared in 1865, is the acetate ester of cellulose. Cellulose acetate is used as a film base in photography, as a component in some adhesives, and as a frame material for eyeglasses; it is also used as a synthetic fiber and in the manufacture of cigarette filters and...

s.

The first artificial fiber, known as artificial silk, became known as viscose
Viscose
Viscose is a viscous organic liquid used to make rayon and cellophane. Viscose is becoming synonymous with rayon, a soft material commonly used in shirts, shorts, coats, jackets, and other outer wear.-Manufacture:...

 around 1894, and finally rayon
Rayon
Rayon is a manufactured regenerated cellulose fiber. Because it is produced from naturally occurring polymers, it is neither a truly synthetic fiber nor a natural fiber; it is a semi-synthetic or artificial fiber. Rayon is known by the names viscose rayon and art silk in the textile industry...

 in 1924. A similar product known as cellulose acetate
Cellulose acetate
Cellulose acetate , first prepared in 1865, is the acetate ester of cellulose. Cellulose acetate is used as a film base in photography, as a component in some adhesives, and as a frame material for eyeglasses; it is also used as a synthetic fiber and in the manufacture of cigarette filters and...

 was discovered in 1865. Rayon and acetate are both artificial fibers, but not truly synthetic, being made from wood
Wood
Wood is a hard, fibrous tissue found in many trees. It has been used for hundreds of thousands of years for both fuel and as a construction material. It is an organic material, a natural composite of cellulose fibers embedded in a matrix of lignin which resists compression...

. Although these artificial fibers were discovered in the mid-nineteenth century, successful modern manufacture began much later.
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