Question

Which of the following fibers can be used for manufacturing of absorbent core based nonwoven products?

• A. Viscose
• B. Linen
• C. Jute
• D. Hemp

Hint:

Viscose (rayon) is the most common fiber used in absorbent nonwoven cores due to its high absorbency, softness, and relatively low cost.

Answer 1

The Correct Option is A

Step 1: Requirements for Absorbent Core Materials: Absorbent cores (used in products like diapers, sanitary napkins, and medical sponges) need fibers that are: 
Highly absorbent: Able to absorb and retain large amounts of liquid. 
Soft and comfortable: For hygiene applications, comfort is essential. 
Relatively inexpensive: Many absorbent products are disposable, so cost is a factor. 
Readily processable into nonwovens: The fibers must be suitable for nonwoven manufacturing techniques. 

Step 2: Analyzing the Options: Viscose (Rayon): Viscose is a regenerated cellulose fiber that is highly absorbent due to its amorphous structure and the presence of hydroxyl groups that attract water. It's also relatively soft and inexpensive. It is widely used in absorbent nonwovens.
 Linen: Linen is a natural cellulosic fiber (from flax) that is strong and absorbent, but it's generally more expensive than viscose and has a coarser feel. 
Jute: Jute is a bast fiber known for its strength and coarseness. It's not very absorbent and is unsuitable for applications requiring softness. 
Hemp: Hemp is a bast fiber with good strength and absorbency, but it is relatively coarse and expensive.