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Effect of Single-Walled Carbon Nanotubes on the Cross-Linking Process in Natural Rubber Vulcanization.
| Content Provider | Europe PMC |
|---|---|
| Author | Vázquez-Martínez, Yoliria Ramírez-Herrera, Claudia A. Mondragón, Margarita Elías-Zúñiga, Alex Elizalde, Luis E. |
| Editor | Gnatowski, Adam |
| Copyright Year | 2022 |
| Abstract | In this study, the effect of single-walled carbon nanotubes (SWCNTs) on the cross-linking of natural rubber (NR) using organic peroxides was investigated. NR-SWCNTs nanocomposites were prepared in an open two-roller mill followed by vulcanization with the compression molding process. Three different organic peroxides, 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane (T29), dicumyl peroxide (DCP), and 2,5-bis(tert-butylperoxy)-2,5-dimethyl-3-hexyne (T145), were used as vulcanizing agents. SWCNTs promote a remarkable reduction in the vulcanization time and increase the degree of cross-linking of vulcanized rubber when compared with neat or natural rubber–carbon-black composites; the same tendency was obtained in the NR-SWCNTs vulcanized with sulfur. Additionally, the mechanical performance of the NR-SWCNTs composites was significantly improved up to 75, 83, 27, and 10% for tensile strength, moduli, tear strength, and hardness. Raman spectroscopy studies evidence the occurrence of reaction between nanotube walls and free radicals generated from using organic peroxides during the vulcanization process. These results demonstrate that the incorporation of SWCNTs in combination with the use of organic peroxides for the NR vulcanization represents a potential alternative for the improvement of the physicochemical properties of NR composites. |
| Journal | Polymers |
| Volume Number | 15 |
| PubMed Central reference number | PMC9824831 |
| Issue Number | 1 |
| PubMed reference number | 36616474 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym15010126 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-12-28 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors. |
| Subject Keyword | natural rubber vulcanization single-walled carbon nanotubes organic peroxides nanocomposites mechanical properties |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Polymers and Plastics |