Rubber Becomes Self-Healing
Engineering360 News Desk | September 24, 2015
Flat tires could become a thing of the past.Scientists have found a way to turn commercial rubber into a "self-healing" material. Modern tires are created using a chemical cross-linking of rubbers by sulfur vulcanization, invented by Charles Goodyear. The cross-linked structures have highly elastic properties that reduce the viscous properties of the materials.
Researchers in Germany and Finland have come up with an approach to converting bromobutyl rubber into a highly elastic material with self-healing properties, a departure from the cross-linking agents. The conversion results in the formation of reversible ionic associates that have physical cross-linking ability. Reversibility of the association facilitates the healing process, enabling a fully cut sample to retain its original properties after applying the self-healing process.
This discovery offers opportunities in the field of highly engineered materials such as tires, where safety and performance are critical.
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For more information visit: http://pubs.acs.org/doi/abs/10.1021/acsami.5b05041