The mechanical properties of polymers are influenced by hardness, fatigue resistance , elongation and impact stength.
Mechanical properties of polymers can be infleuced by temperature. a polymer can change from brittle behavior at low temperatures to a rubber-like behavior at high temperature.
es. Highly crystalline polymers like polypropylenr behave in a brittle manner, whereas amorphous polymers like poystyrene can exhibit plastic deformation
In case of cross-linked polymers, recoverable deformations up to very high strains / point of rupture are also possible
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