vul·ca·nize 
(vŭlkə-nīz′)
(vŭlkə-nīz′)tr.v. vul·ca·nized, vul·ca·niz·ing, vul·ca·niz·es
To improve the strength, resiliency, and freedom from stickiness and odor of (rubber, for example) by combining with sulfur or other additives in the presence of heat and pressure.
vulca·niz′a·ble adj.
vul′ca·ni·zation (-nĭ-zāshən) n.
vulca·niz′er n.