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Make Your Own Elastic Band
This Catalyst article explains how to make an elastic band using Copydex, a source of rubber latex. Rubber latex is a liquid polymer. It is made of long molecules which are all separate. Elastic bands are made by cross-linking the polymers in rubber latex. This changes the properties of the polymer and forms a solid from a liquid. Instead of being separate, cross-linking joins the long molecules together to form a network joined by strong covalent bonds.
This article is from Catalyst: GCSE Science Review 2010, Volume 21, Issue 1.
Catalyst is a science magazine for students aged 14-19 years. Annual subscriptions to print copies of the magazine can be purchased from Mindsets.
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