In 1839, Charles Goodyear heated rubber sap with sulfur, producing the first commercially viable, heat-resistant rubber. After this discovery, demand for rubber trees ran high, and Manu ...

Now 21 years old, Bendek is the CEO of a company called Elastic Energy, which takes that rubber tree sap and makes an elastic band into the main fuel source for the battery, which weighs about 200 ...

Gutta-percha, created by boiling the sap of the Malayan gutta tree, was similar to rubber but lacked rubber's elasticity. Malleable when heated, it hardened at room temperature but remained flexible.

A synthetic gum base is most commonly used, which typically uses a food-grade rubber called polyisobutylene. Tree gum or sap was traditionally used as the base of gum, but this natural ingredient ...