Abstract:
:Self-healing materials are highly desirable because they allow products to maintain their performance. Typical stimuli used for self-healing are heat and light, despite being unsuitable for materials used in certain products as heat can damage other components, and light cannot reach materials located within a product or device. To address these issues, here we show a gas-plastic elastomer with an ionically crosslinked silicone network that quickly self-heals damage in the presence of CO2 gas at normal pressures and room temperature. While a strong elastomer generally exhibits slow self-healing properties, CO2 effectively softened ionic crosslinks in the proposed elastomer, and network rearrangement was promoted. Consequently, self-healing was dramatically accelerated by ~10-fold. Moreover, self-healing was achieved even at -20 °C in the presence of CO2 and the original mechanical strength was quickly re-established during the exchange of CO2 with air.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Miwa Y,Taira K,Kurachi J,Udagawa T,Kutsumizu Sdoi
10.1038/s41467-019-09826-2subject
Has Abstractpub_date
2019-04-23 00:00:00pages
1828issue
1issn
2041-1723pii
10.1038/s41467-019-09826-2journal_volume
10pub_type
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