Question

Describe the process of manufacturing rayon from wood pulp. ​

Answer 1

Answer:

Rayon is a manufactured fiber made from regenerated cellulose fiber. The many types and grades of rayon can imitate the feel and texture of natural fibers such as silk, wool, cotton, and linen. The types that resemble silk are often called artificial silk.

Since rayon is manufactured from naturally occurring polymers, it is not considered to be synthetic[1]. Technically, the term synthetic fiber is reserved for fully synthetic fibers. In manufacturing terms, rayon is classified as "a fiber formed by regenerating natural materials into a usable form". [2] Specific types of rayon include viscose, modal and lyocell, each of which differs in manufacturing process and properties of the finished product.

Rayon is made from purified cellulose, harvested primarily from wood pulp, which is chemically converted into a soluble compound. It is then dissolved and forced through a spinneret to produce filaments which are chemically solidified, resulting in fibers of nearly pure cellulose.[3] Unless the chemicals are handled carefully, workers can be seriously harmed by the carbon disulfide used to manufacture most rayon.[4][5]

Answer 2

Process of manufacturing rayon from wood pulp:

• The manufacturing the rayon from the wood pulp includes various process, like purification of cellulose, wood pulp and steeping, shredding, cutting, aging and xanthation, dissolving, ripening and filtration and final spinning process.
• The sodium hydroxide is used for steeping process forming the soda cellulose and remove the excess elements the pressing is done.
• The white crum is obtained as sheets by shredding, these white are further oxidised using aging.
• The cellulose xanthate is formed using the carbon disulphide and then finally yellow crumb is dissolved in solution for final processed form.

To know more:

Write the raw materials used for making a) rayon b) Nylon c) polyester

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