Property of synthetic fibre
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High wet modulus has high wet strength and microfibers are fine and silky. Another example of synthetic textiles is spandex which can stretch up to 600 times and bounce back. Because of its elasticity, spandex is often used in apparel. It blends well with other fabrics, especially rayon, wool or silk..
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1. Tensile strength:
This property gives us an idea of the strength a material shows when it is pulled.
2. Action of water:
Natural fibres absorb water quite efficiently whereas synthetic fibres do not. Other synthetic polymers also do not absorb water. You have already learnt that clothes made of fabrics that absorb water are more comfortable to wear than clothes made of materials that do not.
3. Action of heat and flame:
Most synthetic polymers are heat sensitive. On being heated, they melt, and at higher temperatures they burn.
Vegetable fibres are heat resistant—they do not melt. Nor do they catch fire as easily. Animal fibres are heat sensitive.
4. Thermal conductivity:
The thermal conductivity of a material gives us an idea of how easily the material conducts heat, i.e., allows the passage of heat through it. Synthetic polymers are generally bad conductors of heat, i.e., they have low thermal conductivity.
5. Electrical conductivity:
The electrical conductivity of a material tells us how easily the material allows an electric current to pass through it. Synthetic polymers are generally insulators, i.e., bad conductors of electricity. It is for this general behaviour that plastic materials are used for insulating electric wires.
This property gives us an idea of the strength a material shows when it is pulled.
2. Action of water:
Natural fibres absorb water quite efficiently whereas synthetic fibres do not. Other synthetic polymers also do not absorb water. You have already learnt that clothes made of fabrics that absorb water are more comfortable to wear than clothes made of materials that do not.
3. Action of heat and flame:
Most synthetic polymers are heat sensitive. On being heated, they melt, and at higher temperatures they burn.
Vegetable fibres are heat resistant—they do not melt. Nor do they catch fire as easily. Animal fibres are heat sensitive.
4. Thermal conductivity:
The thermal conductivity of a material gives us an idea of how easily the material conducts heat, i.e., allows the passage of heat through it. Synthetic polymers are generally bad conductors of heat, i.e., they have low thermal conductivity.
5. Electrical conductivity:
The electrical conductivity of a material tells us how easily the material allows an electric current to pass through it. Synthetic polymers are generally insulators, i.e., bad conductors of electricity. It is for this general behaviour that plastic materials are used for insulating electric wires.
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