Concetti Chiave
- Viscose rayon is a cellulose-based fibre created by treating wood pulp or cotton linters with chemicals, making it a regenerated cellulose fibre.
- The manufacturing process involves purifying cellulose, treating it with chemicals to form a liquid, and spinning it into fibres through a spinneret.
- Viscose rayon is characterized by its absorbency, softness, smooth texture, and silk-like appearance, but it is not strong when wet and creases easily.
- This fibre is known for dying well, being cool to wear, and resisting mildew and moths.
- Common uses of viscose rayon include making bedsheets, home furnishings, table covers, dresses, and underwear.
Viscose Rayon
Man-made or Synthetic fibres
Man-made fibres can be classified into two main headings -
1. The cellulose-based fibres: made from cellulose which is obtained from cotton linters or wood pulp for example viscose rayon, acetate.
2. Non-cellulose man-made or synthetic fibres: made entirely from mineral substances such as coal and petroleum for example nylon, polyester, acrylics, etc.
Viscose rayon:
Viscose rayon is made by treating wood pulp or cotton linters with certain chemicals. It is therefore called regenerated cellulose fibre. There are other types of rayon such as cuprammonium rayon.
Manufacturing process:
1. The cellulose (wood pulp or cotton linters) is first purified.
2. The cellulose is then treated with the right chemicals. It is changed into a thick liquid.
3. The liquid is then forced through a nozzle containing many fine holes called a spinneret. The rayon filaments or fibres are produced.
4. The filaments are spun into yarns. The yarns are woven into fabrics.
Characteristics or properties of viscose rayon:
- It is absorbent.- it is soft and drapes well.
- it is not very strong especially when wet.
- it creases easily.
- it is cool to wear.
- it has smooth surface.
- it resembles silk in appearance only.
- it dyes well.
- it is not easily attacked by mildew.
- it is mothproof.
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