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
Hauptverfasser: Chen, Xiangxu, Dam, Matheus A., Ono, Kanji, Mal, Ajit, Shen, Hongbin, Nutt, Steven R., Sheran, Kevin, Wudl, Fred
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.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1065879