Phosphorus/boron-containing, flame-retardant polyurethane elastomers with great mechanical, shape-memory, and recycling performances
Article
| Article Title | Phosphorus/boron-containing, flame-retardant polyurethane elastomers with great mechanical, shape-memory, and recycling performances |
|---|---|
| ERA Journal ID | 1691 |
| Article Category | Article |
| Authors | Zhang, Tiantian, Huo, Siqi, Ye, Guofeng, Wang, Cheng, Zhang, Qi ., Xue, Yijiao, Song, Pingan, Wang, Hao and Liu, Zhitian |
| Journal Title | Polymer Degradation and Stability |
| Journal Citation | 230 |
| Article Number | 111047 |
| Number of Pages | 11 |
| Year | 2024 |
| Publisher | Elsevier |
| Place of Publication | United Kingdom |
| ISSN | 0141-3910 |
| 0144-2880 | |
| 1873-2321 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1016/j.polymdegradstab.2024.111047 |
| Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0141391024003902 |
| Abstract | Based on sustainable development strategy and practical application requirement, it is crucial to develop high-strength, recyclable, and flame-retardant polyurethane (PU) elastomers. Hence, a flame-retardant, reprocessable, high-performance polyurethane elastomer (PU-DP 1-7) with dynamic boronic ester bonds and phosphorus-containing groups was well-designed and prepared. The chemical structure of PU-DP 1-7 was confirmed by Fourier transform infrared spectrometry (FTIR) and X-ray photoelectron spectroscopy (XPS). PU-DP 1-7 shows a transmittance of about 60% at the wavelength of 900 nm, and phosphorus and boron elements are evenly distributed within its surface, confirming the formation of uniform cross-linking network. The inclusion of phosphorus-and boron-containing groups endows PU-DP 1-7 with a vertical combustion (UL-94) V-0 rating, indicative of desired flame retardancy. In addition, PU-DP 1-7 exhibits a tensile strength of 42.7 MPa and an elongation at break of 616.9%, with high adhesion strengths towards various substrates due to abundant hydrogen bonds within its network. Furthermore, the dynamic borate ester bonds impart PU-DP 1-7 with superior physical recycling and shape-memory properties. After hot-pressing at 130°C, the reformed PU-DP 1-7 film shows an 83.6% recovery efficiency in terms of elongation at break. This work presents an integrated strategy to create flame-retardant, recyclable polyurethane elastomers with great mechanical and shape-memory performances by introducing phosphorus-containing segments and dynamic boronic ester bonds. |
| Keywords | Polyurethane elastomer; Flame retardancy; Mechanical properties; Recyclability; Shape memory |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401609. Polymers and plastics |
| Byline Affiliations | Wuhan Institute of Technology, China |
| School of Engineering | |
| Centre for Future Materials | |
| Chinese Academy of Forestry, China | |
| School of Agriculture and Environmental Science |
https://research.usq.edu.au/item/z9z4q/phosphorus-boron-containing-flame-retardant-polyurethane-elastomers-with-great-mechanical-shape-memory-and-recycling-performances
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