Vulcanization ·Discovered accidentally by Goodyear,dropped rubber and sulfur on a hot stove. Sulfur produces cross- linking,strengthening the rubber. 。Hardness can be controlled by varying the amount of sulfur. => Chapter 26 Chapter 26 14 Vulcanization • Discovered accidentally by Goodyear, dropped rubber and sulfur on a hot stove. • Sulfur produces cross￾linking, strengthening the rubber. • Hardness can be controlled by varying the amount of sulfur. =>