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Making a rubber band.

Learn about rubber band extension, heat contraction, foam rubber production, electrically charged balloons, shape memory polymers, hydrogels in diapers, and their absorption capabilities. Discover these fascinating properties of rubber materials.

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Making a rubber band.

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  1. Making a rubber band.

  2. Measuring extension of rubber band against force.

  3. A stretched rubber band contracts when heated.

  4. Foam rubber can be made from rubber latex, citric acid and sodium bicarbonate.

  5. Making foam rubber.

  6. A balloon can be electrically charged by friction because it is a good electrical insulator.

  7. A strip of shape memory polymer composite reverts to its original shape when warmed.

  8. Hydrogels are used in disposable nappies.

  9. Hydrogel can absorb several time its own mass.

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