The influence of carbon nanotubes on the abrasion and crack growth behaviors of styrene–butadiene rubber compounds
Issued Date
2026-01-01
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eISSN
26335409
Scopus ID
2-s2.0-105029505147
Journal Title
Materials Advances
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SCOPUS
Bibliographic Citation
Materials Advances (2026)
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Lee G.B., Han E.J., Kang D., Junkong P., Nah C. The influence of carbon nanotubes on the abrasion and crack growth behaviors of styrene–butadiene rubber compounds. Materials Advances (2026). doi:10.1039/d5ma01175b Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/115013
Title
The influence of carbon nanotubes on the abrasion and crack growth behaviors of styrene–butadiene rubber compounds
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Abstract
In this study, the influence of carbon nanotubes (CNTs) on the wear and crack growth behaviors of styrene–butadiene rubber (SBR) vulcanizates was reported. Two types of carbon black (CB)-filled SBR compounds were prepared with a total filler loading of 50 phr. In each case, a small fraction (∼3 phr) of CB was replaced either with pristine CNTs (p-CNTs) or with surface-modified CNTs (T-CNTs). The surface modification of CNTs was carried out using a silane coupling agent (Si-69). Wear resistance and crack growth behaviors were evaluated by using a blade-type abrader and a dynamic fatigue instrument, respectively. The SBR-containing p-CNT exhibited reduced wear resistance, as the unmodified CNT was more easily pulled out by the blade during abrasion. On the other hand, the SBR containing T-CNTs demonstrated improved wear resistance (1 phr of T-CNT: 6–7.5% improvement), attributed to the enhanced interaction between the CNTs and the SBR matrix facilitated by the silane coupling agent, which reduced the amount of CNT pull-out. Crack growth resistance was improved in both SBR containing p-CNTs (7.1–60.6% improvement) and T-CNTs (39.8–71.8% improvement). This enhancement is explained by the gradual and partial pull-out of CNTs under repeated straining, which contributed to energy dissipation and improved fatigue resistance, even in the absence of surface modification.