Question 22 (Textile Engineering & Fibre Science)
Shrinkage of cotton fabric during wetting is caused by
| (A) | Extension of fibre |
| (B) | Crimping of fibre |
| (C) | Swelling of fibre |
| (D) | Compression of fibre |
[Show Answer]
Write Here
Frequently Asked Questions | FAQs
What causes shrinkage of cotton fabric during wetting?
Cotton shrinks when wet due to the natural characteristics of the cotton fibers. Cotton fibers are made up of cellulose, which is a type of polymer that can absorb moisture. When cotton fabric is exposed to water, the moisture is absorbed into the fibers, which causes the fibers to swell and become shorter in length.
Cotton fabric can shrink during wetting and washing due to several factors, including:
1)Tension release: During the manufacturing process, the cotton fibers in the fabric are stretched and pulled into the desired shape and size. When the fabric is exposed to water, the tension is released, causing the fabric to shrink.
2)Heat: Cotton fibers are made up of cellulose, which is a type of polymer. When the fibers are exposed to heat, they can become distorted and compressed, causing the fabric to shrink.
3)Agitation: The mechanical action of washing machines and dryers can cause the fibers to rub against each other and become tangled. This can result in the fibers compressing and the fabric shrinking.
4)Chemicals: Some detergents and fabric softeners can cause the cotton fibers to swell and contract, resulting in shrinkage.
To minimize shrinkage, it’s important to follow the care instructions on the fabric label, wash cotton fabrics in cool or cold water, avoid high heat drying, and consider air drying or line drying.