A Thermally Re-Mendable Cross-Linked Polymeric Material
We have developed a transparent organic polymeric material that can repeatedly mend or "re-mend" itself under mild conditions. The material is a tough solid at room temperature and below with mechanical properties equaling those of commercial epoxy resins. At temperatures above 120°C, appr...
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Veröffentlicht in: | Science (American Association for the Advancement of Science) 2002-03, Vol.295 (5560), p.1698-1702 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We have developed a transparent organic polymeric material that can repeatedly mend or "re-mend" itself under mild conditions. The material is a tough solid at room temperature and below with mechanical properties equaling those of commercial epoxy resins. At temperatures above 120°C, approximately 30% (as determined by solid-state nuclear magnetic resonance spectroscopy) of "intermonomer" linkages disconnect but then reconnect upon cooling. This process is fully reversible and can be used to restore a fractured part of the polymer multiple times, and it does not require additional ingredients such as a catalyst, additional monomer, or special surface treatment of the fractured interface. |
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ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.1065879 |