Question 40 (Textile Technology & Fibre Science)
Consider the following statements with respect to a cotton fabric which has been fully desized and bleached but not scoured:
P. It has residual seed coat fragments
Q. It has poor water absorbency
R. It has high whiteness index
S. It has high crease recovery
The combination of TRUE statements is
|(A)||P, Q and R|
|(B)||Q, R and S|
|(C)||P, R and S|
|(D)||P, Q and S|
Option A is correct
Frequently Asked Questions | FAQs
What is whiteness index of cotton ?
The whiteness index of cotton is a measure of the degree of whiteness or brightness of cotton fibers, yarns, or fabrics. The whiteness index is expressed as a numerical value, typically on a scale of 0 to 100, where 100 represents maximum whiteness. The whiteness index is an important characteristic in the cotton industry, as it affects the appearance, drapability, and colorfastness of the final product.
What is crease recovery ?
Crease recovery is a property of fabrics that refers to the ability of a material to return to its original shape after being folded or creased. The term is often used in the textile industry to describe the resilience of a fabric and its ability to retain its appearance and shape, even after repeated wear and use.
The crease recovery of a fabric depends on various factors, including the type of fibers used, the structure of the fabric, and the finishing treatments applied to the fabric. For example, fabrics made from synthetic fibers, such as polyester and nylon, tend to have good crease recovery due to their low moisture absorbency and high elasticity, while natural fibers, such as cotton and linen, tend to have poorer crease recovery. Additionally, the use of special finishes, such as those that increase the fabric’s elasticity, can also improve its crease recovery.