Das A, Sallat A, Boehme F, Suckow M, Basu D, Wiessner S, Stoeckelhuber KW, Voit B, Heinrich G (2015)
Publication Type: Journal article
Publication year: 2015
Book Volume: 7
Pages Range: 20623-20630
Journal Issue: 37
Invented by Charles Goodyear, chemical cross-linking of rubbers by sulfur vulcanization is the only method by which modern automobile tires are manufactured. The formation of these cross-linked network structures leads to highly elastic properties, which substantially reduces the viscous properties of these materials. Here, we describe a simple approach to converting commercially available and widely used bromobutyl rubber (BIIR) into a highly elastic material with extraordinary self-healing properties without using conventional cross-linking or vulcanising agents. Transformation of the bromine functionalities of BIIR into ionic imidazolium bromide groups results in the formation of reversible ionic associates that exhibit physical cross-linking ability. The reversibility of the ionic association facilitates the healing processes by temperature- or stress-induced rearrangements, thereby enabling a fully cut sample to retain its original properties after application of the self-healing process. Other mechanical properties, such as the elastic modulus, tensile strength, ductility, and hysteresis loss, were found to be superior to those of conventionally sulfur-cured BIIR. This simple and easy approach to preparing a commercial rubber with self-healing properties offers unique development opportunities in the field of highly engineered materials, such as tires, for which safety, performance, and longer fatigue life are crucial factors.
APA:
Das, A., Sallat, A., Boehme, F., Suckow, M., Basu, D., Wiessner, S.,... Heinrich, G. (2015). Ionic Modification Turns Commercial Rubber into a Self-Healing Material. ACS Applied Materials and Interfaces, 7(37), 20623-20630. https://dx.doi.org/10.1021/acsami.5b05041
MLA:
Das, Amit, et al. "Ionic Modification Turns Commercial Rubber into a Self-Healing Material." ACS Applied Materials and Interfaces 7.37 (2015): 20623-20630.
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