vulcanize
verb (used with object)
to treat (rubber) with sulfur and heat, thereby imparting strength, greater elasticity, durability, etc.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
But if litharge be a constituent, it is found that acetone-extracted rubber will hardly vulcanise at all.
From The Preparation of Plantation Rubber by Sidney Morgan