Question

Write the characteristics of Wool and Silk. (six points)​

Answer 1

WOOL

WOOL DOESN'T LET AIR GO THROUGH IT

IT KEEPS US WARM

IT IS A NATURAL FIBRE

IT IS OBTAINED FROM SHEEP

IT IS DURABLE

IT IS ELASTIC

SILK

• SILK IS ONE OF THE STRONGEST NATURAL FIBRE
• ITS ELASTIC
• ITS DURABLE
• ITS EXPENSIVE
• ITS LUSTROUS
• SILK IS SMOOTH

Answer 2

Answer:

SILK

1. Silk is one of the popular fabrics for apparel because of its unique properties. Silk is most luxurious fabric, the most comfortable fabric, the most absorbent of fabrics (equal to wool), the best fabric for drape, the best fabric for color, capable of the greatest lustre, having the finest "hand" etc. 
2. Composition: The silk fibre is chiefly composed of 80% of fibroin, which is protein in nature and 20% of sericin, which is otherwise called as silk gum.
4. Strength: Silk as a fibre, has good tensile strength, which allows it to withstand great pulling pressure. Silk is the strongest natural fibre and has moderate abrasion resistance. The strength of the thrown yarns is mainly due to the continuous length of the fibre.
5. Elasticity: Silk fibre is an elastic fibre and may be stretched from 1/7 to 1/5 of its original length before breaking.
6. Drapability: Silk has a liability and suppleness that, aided by its elasticity and resilience, gives it excellent drapability
7. Effect of Heat: Silk is sensitive to heat and begins to decompose at 330° F (165° C). The silk fabrics thus have to be ironed when damp.

wool

1. Wool fiber is the natural hair grown on sheep and is composed of protein substance called as keratin. Wool is composed of carbon, hydrogen, nitrogen and this is the only animal fiber, which contains sulfur in addition.
2. They are composed of amino acids.
4. These fibers are strong, fine and elastic fiber which is relatively short, ranging from 1 to 5 inches (25 – 125 mm).
6. They have poor resistance to alkalis but good resistance to acids.
7. They have good elasticity and resiliency.
9. They tend to be warmer than others.
11. This type of wool fiber known should not be confused for pulled wool. Dead wool fiber is decidedly inferior in grade; it is used in low-grade cloth.

Explanation:

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