cid 5db817962045e9ab5d957eb9d674c0d2b8b648e6756f49d5184179871b3898e5 · original · via openalex
Title: A Thermally Re-mendable Cross-Linked Polymeric Material Authors: Xiangxu Chen; Matheus Adrianus Dam; Kanji Ono; Ajit Mal; Hongbin Shen; Steven Nutt; Kevin Sheran; Fred Wudl Venue: Science Year: 2002 Canonical: doi:10.1126/science.1065879 URL: https://doi.org/10.1126/science.1065879 Collector: openalex OA: false ABSTRACT 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 degrees 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.