| Synthesis and Characterization of Self-healing Elastomers Based on Hydrogen Bonding of Catechol |
| Received:April 03, 2019 Revised:April 03, 2019 |
| DOI：10.12136/j.issn.1000-890X.2019.08.563 |
| Key Words: self-healing；elastomer；catechol；butyl acrylate；hydrogen bond；phase separation；cross-linking；synthesis；structure characterization |
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| Abstract: |
| By copolymerization of catechol vinyl monomer（DMA） and butyl acrylate（BA），a random polymer BA-co-DMA was synthesized，and its structure and properties were characterized.The result showed that，catechol was introduced into acrylate polymer to obtain thermoplastic elastomer with excellent mechanical properties and self-healing properties.FTIR measurement demonstrated that BA-co-DMA formed hydrogen bonds between catechol groups，which endowed the material with high self-healing properties.The phase separation observed by AFM revealed that the interaction between catechol groups leaded to the formation of aggregates，which formed a physical cross-linked network within the polymers.High temperature promoted the molecular mobility，so that BA-co-DMA fractured sample could be repaired for 12 h at 60 ℃ with a high healing efficiency. |
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