A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis
ABSTRACTFor sustainable application of chloroprene rubber (CR), a new technology is developed by the vulcanization of CR using 2,2’-dithiodipyridine (DPD) as a cross-linking agent with the reprocessing performance owing to disulfide metathesis. When DPD was incorporated into CR vulcanization, the Me...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2024-01-01
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| Series: | International Journal of Smart and Nano Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475411.2023.2258830 |
| _version_ | 1797272358451412992 |
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| author | Jianliang Jiang Junxue Zhai Yanqing Chen Dongqi Zhao Yakai Feng |
| author_facet | Jianliang Jiang Junxue Zhai Yanqing Chen Dongqi Zhao Yakai Feng |
| author_sort | Jianliang Jiang |
| collection | DOAJ |
| description | ABSTRACTFor sustainable application of chloroprene rubber (CR), a new technology is developed by the vulcanization of CR using 2,2’-dithiodipyridine (DPD) as a cross-linking agent with the reprocessing performance owing to disulfide metathesis. When DPD was incorporated into CR vulcanization, the Menschutkin reaction between allyl chloride group and pyridine group occurred with a maximum exothermic peak at 184°C. The number of effective cross-linking bond at 0.5 phr DPD vulcanizate was higher than that at high DPD content. This vulcanizate showed high tensile strength (11.12 MPa) and elongation at break (1253 ± 120%) owing to the exchangeable disulfide bond in the system. Under the catalysis of triphenylphosphine, the metathesis of disulfide compound was improved obviously, which endowed CR/DPD vulcanizates with good recyclability performance. Disulfide cross-linkage maintains its stability at low temperature, thus ensuring the mechanical stability of CR/DPD vulcanizate under the ambient conditions. Vulcanization and reprocessing of CR/DPD vulcanizate can be conducted with common industrial rubber processing equipment. Such reprocessable chloroprene rubber could have potential application in CR industry, also serve to significantly improve environmental sustainability. |
| first_indexed | 2024-03-07T14:27:10Z |
| format | Article |
| id | doaj.art-7d064e51d46e456c85d2f42c3ac52894 |
| institution | Directory Open Access Journal |
| issn | 1947-5411 1947-542X |
| language | English |
| last_indexed | 2024-03-07T14:27:10Z |
| publishDate | 2024-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Smart and Nano Materials |
| spelling | doaj.art-7d064e51d46e456c85d2f42c3ac528942024-03-06T06:05:48ZengTaylor & Francis GroupInternational Journal of Smart and Nano Materials1947-54111947-542X2024-01-01151426110.1080/19475411.2023.2258830A novel reprocessable chloroprene rubber based on dynamic disulfide metathesisJianliang Jiang0Junxue Zhai1Yanqing Chen2Dongqi Zhao3Yakai Feng4School of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin University, Tianjin, ChinaKey Laboratory of Rubber-Plastics of Ministry of Education/Shandong Province, (QUST), School of Polymer Science & Engineering, Qingdao University of Science & Technology, Qingdao, ChinaKey Laboratory of Rubber-Plastics of Ministry of Education/Shandong Province, (QUST), School of Polymer Science & Engineering, Qingdao University of Science & Technology, Qingdao, ChinaR&D Department of Tianjin Joaboa Technology Co. Ltd, Tianjin, P. R. ChinaSchool of Chemical Engineering and Technology, Collaborative Innovation Center of Chemical Science and Chemical Engineering (Tianjin), Tianjin University, Tianjin, ChinaABSTRACTFor sustainable application of chloroprene rubber (CR), a new technology is developed by the vulcanization of CR using 2,2’-dithiodipyridine (DPD) as a cross-linking agent with the reprocessing performance owing to disulfide metathesis. When DPD was incorporated into CR vulcanization, the Menschutkin reaction between allyl chloride group and pyridine group occurred with a maximum exothermic peak at 184°C. The number of effective cross-linking bond at 0.5 phr DPD vulcanizate was higher than that at high DPD content. This vulcanizate showed high tensile strength (11.12 MPa) and elongation at break (1253 ± 120%) owing to the exchangeable disulfide bond in the system. Under the catalysis of triphenylphosphine, the metathesis of disulfide compound was improved obviously, which endowed CR/DPD vulcanizates with good recyclability performance. Disulfide cross-linkage maintains its stability at low temperature, thus ensuring the mechanical stability of CR/DPD vulcanizate under the ambient conditions. Vulcanization and reprocessing of CR/DPD vulcanizate can be conducted with common industrial rubber processing equipment. Such reprocessable chloroprene rubber could have potential application in CR industry, also serve to significantly improve environmental sustainability.https://www.tandfonline.com/doi/10.1080/19475411.2023.2258830Chloroprene rubberreprocessableMenschutkin reactiondisulfide |
| spellingShingle | Jianliang Jiang Junxue Zhai Yanqing Chen Dongqi Zhao Yakai Feng A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis International Journal of Smart and Nano Materials Chloroprene rubber reprocessable Menschutkin reaction disulfide |
| title | A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| title_full | A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| title_fullStr | A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| title_full_unstemmed | A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| title_short | A novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| title_sort | novel reprocessable chloroprene rubber based on dynamic disulfide metathesis |
| topic | Chloroprene rubber reprocessable Menschutkin reaction disulfide |
| url | https://www.tandfonline.com/doi/10.1080/19475411.2023.2258830 |
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