Introduction to Textile Fibres

 

Fundamentals of Textile Fibres

Define Fibre

A fibre is a fine, hair-like structure that is significantly longer than it is wide. Fibres are the basic building blocks for producing yarns, fabrics, and ultimately textile products. They can be natural or synthetic and must possess sufficient strength, flexibility, and length to be useful in textile manufacturing.

Define Textile Fibre

A textile fibre is a specific type of fibre that is suitable for being spun into yarn or otherwise processed into fabric. To qualify as a textile fibre, it must meet basic requirements such as high length-to-width ratio, strength, elasticity, cohesiveness, and resistance to wear and environmental conditions.

Construction Model of Textile Fibre

The construction model of a textile fibre typically includes:

• Molecular Structure: Textile fibres are composed of long-chain molecules called polymers. These polymers are aligned along the fibre axis, giving strength and flexibility.

• Crystalline and Amorphous Regions: Fibres have both ordered (crystalline) and disordered (amorphous) molecular regions. Crystalline regions provide strength and stability, while amorphous regions offer elasticity and absorbency.

• Surface Characteristics: The outer surface of fibres can vary from smooth to rough, affecting how they interact with other fibres and dyes.

• Cross-sectional Shape: Different fibres have distinct cross-sectional shapes (round, trilobal, etc.), which influence luster, softness, and bulk.

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Distinguish Between Fibre and Textile Fibre

Aspect	Fibre	Textile Fibre
Definition	Any hair-like substance, natural or synthetic.	A fibre specifically suitable for making yarns and fabrics.
Suitability	May not possess the necessary properties for textiles.	Must meet properties like strength, flexibility, length, and durability.
Examples	Asbestos fibre, plant root fibres.	Cotton, wool, polyester, silk.

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Classification of Textile Fibre

Textile fibres can be broadly classified into two categories:

1. Natural Fibres

   • Plant-based (Cellulose): Cotton, flax (linen), jute, hemp.

   • Animal-based (Protein): Wool, silk, alpaca, mohair.

   • Mineral-based: Asbestos.

2. Man-Made Fibres

   • Regenerated Fibres: Rayon, lyocell, acetate.

   • Synthetic Fibres: Polyester, nylon, acrylic, spandex.

   • Inorganic Fibres: Glass fibre, metallic fibres.

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Properties of Textile Fibre

Textile fibres exhibit the following key properties:

• Strength: Ability to withstand tension without breaking.

• Flexibility: Capacity to bend without breaking.

• Spinnability: Ability to be twisted into yarns.

• Moisture Absorbency: Ability to absorb water (hydrophilic) or repel water (hydrophobic).

• Elasticity: Ability to stretch and return to original length.

• Thermal Conductivity: How the fibre reacts to heat; important for insulation.

• Chemical Resistance: Resistance to damage from chemicals, detergents, and environmental factors.

• Durability: Ability to resist wear, tear, and aging.

• Surface Texture: Smoothness or roughness of the fibre surface, affecting tactile properties.