Ultra-stretchable and Self-Healable Vitrimers with Tuneable Damping and Mechanical Response
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| Format: | Preprint |
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2025
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| _version_ | 1866915450939506688 |
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| author | Zhao, Jiaxin Warren, Nicholas J. Mandle, Richard Hine, Peter Read, Daniel J Wilson, Andrew J. Mattsson, Johan |
| author_facet | Zhao, Jiaxin Warren, Nicholas J. Mandle, Richard Hine, Peter Read, Daniel J Wilson, Andrew J. Mattsson, Johan |
| contents | Vitrimers are a relatively new class of polymer materials with unique properties offered by cross-links that can undergo associative exchange dynamics. We here present a new class of vitrimers based on poly(methyl acrylate) with cross-links utilising dioxaboralane metathesis. These vitrimers demonstrate a combination of ultra-stretchability (up to $\sim$ 80 times their own length), mechanical toughness ($\sim$ 40 MJ/m$^3$), and thermal stability up to $T\sim$ 250 °C; moreover, the vitrimers demonstrate excellent mechanical damping characterised by a loss factor ($\tan(δ)$) with a maximum of $\sim$ 2-3 and an effective value $>$0.3 across five decades in frequency (0.001-100 Hz), or correspondingly across a $T$-range of $\sim$ 35 °C near room temperature (for a probe frequency of 1 Hz). The vitrimers can be successfully re-processed using both a thermo-mechanical and a chemical processing route, and can for low cross-link density self-heal at room temperature, making them suitable for sustainable applications. The material properties are directly tuneable by variation of both the amount of cross-linker and by the degree of curing. Thus, this class of vitrimers are promising for applications where stretchability combined with mechanical toughness and/or a high mechanical dissipation is required. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_03701 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ultra-stretchable and Self-Healable Vitrimers with Tuneable Damping and Mechanical Response Zhao, Jiaxin Warren, Nicholas J. Mandle, Richard Hine, Peter Read, Daniel J Wilson, Andrew J. Mattsson, Johan Soft Condensed Matter Materials Science Vitrimers are a relatively new class of polymer materials with unique properties offered by cross-links that can undergo associative exchange dynamics. We here present a new class of vitrimers based on poly(methyl acrylate) with cross-links utilising dioxaboralane metathesis. These vitrimers demonstrate a combination of ultra-stretchability (up to $\sim$ 80 times their own length), mechanical toughness ($\sim$ 40 MJ/m$^3$), and thermal stability up to $T\sim$ 250 °C; moreover, the vitrimers demonstrate excellent mechanical damping characterised by a loss factor ($\tan(δ)$) with a maximum of $\sim$ 2-3 and an effective value $>$0.3 across five decades in frequency (0.001-100 Hz), or correspondingly across a $T$-range of $\sim$ 35 °C near room temperature (for a probe frequency of 1 Hz). The vitrimers can be successfully re-processed using both a thermo-mechanical and a chemical processing route, and can for low cross-link density self-heal at room temperature, making them suitable for sustainable applications. The material properties are directly tuneable by variation of both the amount of cross-linker and by the degree of curing. Thus, this class of vitrimers are promising for applications where stretchability combined with mechanical toughness and/or a high mechanical dissipation is required. |
| title | Ultra-stretchable and Self-Healable Vitrimers with Tuneable Damping and Mechanical Response |
| topic | Soft Condensed Matter Materials Science |
| url | https://arxiv.org/abs/2503.03701 |