Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance
Abstract Sunlight‐triggered self‐healing of polymers has attractive advantages, but the same illumination inevitably causes photoaging. The resulting properties deterioration and shortened lifespan run counter to the desire for self‐healing. Herein, the authors propose an innovative solution by intr...
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| Format: | Article |
| Language: | English |
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Wiley
2024-12-01
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| Series: | SusMat |
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| Online Access: | https://doi.org/10.1002/sus2.227 |
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| author | Yan Mei Li Ze Ping Zhang Min Zhi Rong Ming Qiu Zhang |
| author_facet | Yan Mei Li Ze Ping Zhang Min Zhi Rong Ming Qiu Zhang |
| author_sort | Yan Mei Li |
| collection | DOAJ |
| description | Abstract Sunlight‐triggered self‐healing of polymers has attractive advantages, but the same illumination inevitably causes photoaging. The resulting properties deterioration and shortened lifespan run counter to the desire for self‐healing. Herein, the authors propose an innovative solution by introducing carbazolyl‐based dithiocarbamate units. The proof‐of‐concept crosslinked poly(carbazolyl dithiocarbamates‐urethane) shows that the multitasking reactivities of the dynamic bonds stimulated by the sun's ultraviolet rays concurrently implement self‐healing and improve the photoaging resistance. As reflected by the xenon weatherometer measurements, it retains 73.5% of the original strength after 576 h owing to the effects of hydroperoxide intermediates elimination and fluorescence emission. The anti‐photoaging ability is far superior to the control filled with commercial stabilizer. Meantime, networks rearrangement via dynamic exchange reactions among the sunlight‐sensitive dithiocarbamates and long‐range free radicals transfer are allowed in surface layer and the interior, so that the cracks up to 8.5 mm deep are repaired. The work provides a feasible way to break the bottleneck in application of photochemical self‐healing polymers. |
| format | Article |
| id | doaj-art-9a0b940601dc4a1eb955af6f7f8c3ccd |
| institution | OA Journals |
| issn | 2692-4552 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | SusMat |
| spelling | doaj-art-9a0b940601dc4a1eb955af6f7f8c3ccd2025-08-20T02:35:46ZengWileySusMat2692-45522024-12-0146n/an/a10.1002/sus2.227Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistanceYan Mei Li0Ze Ping Zhang1Min Zhi Rong2Ming Qiu Zhang3Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Laboratory, IGCME, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Laboratory, IGCME, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Laboratory, IGCME, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaKey Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Laboratory, IGCME, School of Chemistry Sun Yat‐Sen University Guangzhou ChinaAbstract Sunlight‐triggered self‐healing of polymers has attractive advantages, but the same illumination inevitably causes photoaging. The resulting properties deterioration and shortened lifespan run counter to the desire for self‐healing. Herein, the authors propose an innovative solution by introducing carbazolyl‐based dithiocarbamate units. The proof‐of‐concept crosslinked poly(carbazolyl dithiocarbamates‐urethane) shows that the multitasking reactivities of the dynamic bonds stimulated by the sun's ultraviolet rays concurrently implement self‐healing and improve the photoaging resistance. As reflected by the xenon weatherometer measurements, it retains 73.5% of the original strength after 576 h owing to the effects of hydroperoxide intermediates elimination and fluorescence emission. The anti‐photoaging ability is far superior to the control filled with commercial stabilizer. Meantime, networks rearrangement via dynamic exchange reactions among the sunlight‐sensitive dithiocarbamates and long‐range free radicals transfer are allowed in surface layer and the interior, so that the cracks up to 8.5 mm deep are repaired. The work provides a feasible way to break the bottleneck in application of photochemical self‐healing polymers.https://doi.org/10.1002/sus2.227anti‐photoagingdithiocarbamate bondphoto‐reversiblesunlight‐stimulated self‐healingultra‐deep healing capability |
| spellingShingle | Yan Mei Li Ze Ping Zhang Min Zhi Rong Ming Qiu Zhang Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance SusMat anti‐photoaging dithiocarbamate bond photo‐reversible sunlight‐stimulated self‐healing ultra‐deep healing capability |
| title | Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance |
| title_full | Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance |
| title_fullStr | Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance |
| title_full_unstemmed | Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance |
| title_short | Breaking barriers: Sunlight‐activated self‐healing polymers with unprecedented photoaging resistance |
| title_sort | breaking barriers sunlight activated self healing polymers with unprecedented photoaging resistance |
| topic | anti‐photoaging dithiocarbamate bond photo‐reversible sunlight‐stimulated self‐healing ultra‐deep healing capability |
| url | https://doi.org/10.1002/sus2.227 |
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