Question

The following is considered as one of the fibre properties, prior selection to Spinning of Cotton

• A. Bending Rigidity
• B. Fused Index
• C. Maturity
• D. Surface Friction

Hint:

The important fibre properties evaluated before cotton spinning include: \[ \begin{aligned} &\bullet\ \text{Length} &\bullet\ \text{Strength} &\bullet\ \text{Fineness} &\bullet\ \text{Uniformity} &\bullet\ \text{Micronaire} &\bullet\ \textbf{Maturity} \end{aligned} \] Remember: \[ \boxed{\text{More Mature Fibre } \Rightarrow \text{Better Spinning } \Rightarrow \text{Better Yarn Quality}} \] Maturity is one of the most frequently asked fibre properties in textile engineering examinations.

Answer 1

The Correct Option is C

Concept: Before cotton fibres are selected for spinning, they are evaluated based on several important fibre properties that influence yarn quality, spinning performance, and fabric characteristics. Some of the essential properties of cotton fibres are:
• Fibre Length
• Fibre Fineness
• Fibre Strength (Tenacity)
• Uniformity Ratio
• Fibre Maturity
• Fibre Elongation
• Micronaire Value
• Colour and Trash Content Among these, maturity is one of the most significant properties because it indicates the degree of development of the cotton fibre wall. Mature fibres possess thicker cell walls, better strength, and higher dye absorption, making them more suitable for spinning.

Step 1: Understand the meaning of fibre maturity.
Fibre maturity refers to the extent of development of the cotton fibre during its growth. A mature fibre has \[ \begin{aligned} &\bullet\ \text{Thicker cell wall,} &\bullet\ \text{Higher strength,} &\bullet\ \text{Better dye uptake,} &\bullet\ \text{Improved spinning performance.} \end{aligned} \] On the other hand, immature fibres have thin walls and tend to produce: \[ \begin{aligned} &\bullet\ \text{More neps,} &\bullet\ \text{Weak yarn,} &\bullet\ \text{Uneven dyeing,} &\bullet\ \text{Poor fabric appearance.} \end{aligned} \] Therefore, maturity is an important criterion while selecting cotton for spinning.

Step 2: Examine each option.
Option (A): Bending Rigidity Bending rigidity is mainly associated with the stiffness or flexural behaviour of fibres and fabrics. It is not one of the primary selection parameters before cotton spinning. Hence, \[ \boxed{\text{Option (A) is incorrect.}} \] Option (B): Fused Index Fused Index is not a standard property used in cotton fibre evaluation before spinning. Hence, \[ \boxed{\text{Option (B) is incorrect.}} \] Option (C): Maturity Maturity is a standard fibre characteristic used in cotton quality evaluation and directly affects spinning efficiency and yarn quality. Hence, \[ \boxed{\text{Option (C) is correct.}} \] Option (D): Surface Friction Although friction influences fibre processing, it is not considered one of the principal fibre selection parameters for cotton spinning. Hence, \[ \boxed{\text{Option (D) is incorrect.}} \]

Step 3: Write the final answer.
Among the given options, the important fibre property considered before cotton spinning is \[ \boxed{\text{Maturity}.} \] Therefore, the correct option is \[ \boxed{\text{(C) Maturity.}} \]