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Write a Note on Visco-elastic State. - Applied Chemistry 1

Short Note

Write a note on Visco-elastic state.

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Solution

Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when undergoing deformation. Viscous materials, like honey, resist shear flow and strain linearly with time when a stress is applied. Viscoelasticity is a molecular rearrangement. When a stress is applied to a viscoelastic material such as a polymer, parts of a long polymer chain change position a Is. Synthetic polymers, woods and human tissues, as well as metals at high temperature, show significant viscoelasticity.

PROPERTIES:
• They behave like an elastic material as well as viscous material when stress is applied.
• They dissipate energy in form of heat when a load is applied and then removed.

USES:
• They are used for isolation vibration.
• They are used for dampening noise.

Concept: Viscoelasticity
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