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Balloons are made up of a polymer, rubber. the reason for rubber being used in making of balloons is that rubber is an example of an elastomer type polymer, where the polymer has the ability to return to its original shape after being stretched or deformed. The rubber polymer is coiled when in the resting state. The elastic properties arise from the its ability to stretch the chains apart, but when the tension is released the chains snap back to the original position.

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13y ago

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