Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers
High-performance polymers (HPPs) have good thermal and mechanical properties even under harsh environments and are widely used in aerospace, microelectronics, automobile, and other fields. Traditional employed highly cross-linked HPPs tend to fail in their performance at high temperatures due to the...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/171808 |
| _version_ | 1811687609035915264 |
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| author | Yu, Chongwen Li, Tianhao Hu, Xiao Liu, Ming Huang, Qing He, Liu Song, Yujie |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Yu, Chongwen Li, Tianhao Hu, Xiao Liu, Ming Huang, Qing He, Liu Song, Yujie |
| author_sort | Yu, Chongwen |
| collection | NTU |
| description | High-performance polymers (HPPs) have good thermal and mechanical properties even under harsh environments and are widely used in aerospace, microelectronics, automobile, and other fields. Traditional employed highly cross-linked HPPs tend to fail in their performance at high temperatures due to the structural defects, which remains a challenge in both scientific investigation and engineering applications for decades. Herein, we employed a cyclosiloxane hybrid polymer (CHP) to investigate a new design strategy to compensate for the structural defects in the highly cross-linked network, which avoids catastrophic failure at high temperatures. Hyperbranched o-carborane was synthesized and used to compensate for structural defects of CHP. The antioxidant ability and toughness of CHP were improved, and it had better mechanical properties over a wide temperature range. Moreover, the anchoring effect of hyperbranched o-carborane in the cyclosiloxane network was systematically investigated. The hyperbranched o-carborane cage could stabilize the CHP network under dynamic thermal stress through anchoring the dangling bonds, and the highly cross-linked network suppressed the disintegration of the o-carborane cage by anchoring boron atoms of the o-carborane cage. Furthermore, the structural evolution mechanism of the o-carborane cage with increasing temperature was proposed. This fundamental research provided new insights into the design of HPPs for harsh environments. |
| first_indexed | 2024-10-01T05:19:02Z |
| format | Journal Article |
| id | ntu-10356/171808 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:19:02Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1718082023-11-08T05:39:54Z Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers Yu, Chongwen Li, Tianhao Hu, Xiao Liu, Ming Huang, Qing He, Liu Song, Yujie School of Materials Science and Engineering Engineering::Materials Anchoring Effects Carborane Cages High-performance polymers (HPPs) have good thermal and mechanical properties even under harsh environments and are widely used in aerospace, microelectronics, automobile, and other fields. Traditional employed highly cross-linked HPPs tend to fail in their performance at high temperatures due to the structural defects, which remains a challenge in both scientific investigation and engineering applications for decades. Herein, we employed a cyclosiloxane hybrid polymer (CHP) to investigate a new design strategy to compensate for the structural defects in the highly cross-linked network, which avoids catastrophic failure at high temperatures. Hyperbranched o-carborane was synthesized and used to compensate for structural defects of CHP. The antioxidant ability and toughness of CHP were improved, and it had better mechanical properties over a wide temperature range. Moreover, the anchoring effect of hyperbranched o-carborane in the cyclosiloxane network was systematically investigated. The hyperbranched o-carborane cage could stabilize the CHP network under dynamic thermal stress through anchoring the dangling bonds, and the highly cross-linked network suppressed the disintegration of the o-carborane cage by anchoring boron atoms of the o-carborane cage. Furthermore, the structural evolution mechanism of the o-carborane cage with increasing temperature was proposed. This fundamental research provided new insights into the design of HPPs for harsh environments. This work is financially supported by the National Natural Science Foundation of China (No. 52203019) and Ningbo 3315 Plan (Grant No. 2018A-03-A). 2023-11-08T05:39:54Z 2023-11-08T05:39:54Z 2023 Journal Article Yu, C., Li, T., Hu, X., Liu, M., Huang, Q., He, L. & Song, Y. (2023). Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers. Macromolecules, 56(12), 4738-4747. https://dx.doi.org/10.1021/acs.macromol.3c00286 0024-9297 https://hdl.handle.net/10356/171808 10.1021/acs.macromol.3c00286 2-s2.0-85162248188 12 56 4738 4747 en Macromolecules © 2023 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Materials Anchoring Effects Carborane Cages Yu, Chongwen Li, Tianhao Hu, Xiao Liu, Ming Huang, Qing He, Liu Song, Yujie Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title | Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title_full | Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title_fullStr | Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title_full_unstemmed | Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title_short | Anchoring effect of hyperbranched carborane in highly cross-linked cyclosiloxane networks toward high-performance polymers |
| title_sort | anchoring effect of hyperbranched carborane in highly cross linked cyclosiloxane networks toward high performance polymers |
| topic | Engineering::Materials Anchoring Effects Carborane Cages |
| url | https://hdl.handle.net/10356/171808 |
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