The correct answer is option 1. cellulose.
Viscose fiber is derived from cellulose, a natural polymer found in plant cell walls. The process of producing viscose involves several steps:
1. Cellulose Sourcing: The primary source of cellulose for viscose production is wood pulp, although other sources like cotton linters and bamboo may also be used. Wood pulp is treated to extract the cellulose.
2. Alkali Treatment: The extracted cellulose is treated with an alkali solution (usually sodium hydroxide) to form alkali cellulose.
3. Carbon Disulfide Treatment: The alkali cellulose is then reacted with carbon disulfide to produce a compound called cellulose xanthate.
4. Viscose Solution: The cellulose xanthate is dissolved in a sodium hydroxide solution, forming a viscose solution. This solution is a thick, honey-like liquid.
5. Spinning: The viscose solution is then extruded through spinnerets into a coagulating bath, usually containing sulfuric acid. This causes the cellulose xanthate to be regenerated back into cellulose in fiber form.
6. Washing and Finishing: The newly formed cellulose fibers, now in the form of viscose fiber, are washed and treated to remove impurities and chemicals. The fibers are then further processed and finished for various applications.
Viscose fiber, also known as rayon, is valued for its soft and silky feel. It is a versatile material used in the production of clothing, home textiles, and other applications due to its comfort and drape. While viscose is derived from natural cellulose, it undergoes chemical processing during its production. |
