Enhanced Multifunction in Polyurethane Elastomers via Regulation of Triple-Crosslinked Network With Dynamic Covalent and Noncovalent Bonds
Rongmei Su
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Project administration (lead), Resources (lead), Software (lead), Validation (lead), Visualization (lead), Writing - original draft (lead)
Search for more papers by this authorPu Huang
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Contribution: Conceptualization (supporting), Data curation (supporting), Formal analysis (supporting), Resources (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorLin Gan
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Conceptualization (supporting), Data curation (supporting), Investigation (supporting), Methodology (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorShuiping Zhou
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Contribution: Investigation (supporting), Methodology (supporting), Project administration (supporting), Visualization (supporting), Writing - original draft (supporting)
Search for more papers by this authorXiaoan Li
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Software (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorCorresponding Author
Wei Li
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Funding acquisition (supporting), Writing - review & editing (supporting)
Search for more papers by this authorCorresponding Author
Jin Huang
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Funding acquisition (lead), Project administration (lead), Resources (lead), Validation (lead), Writing - review & editing (lead)
Search for more papers by this authorCorresponding Author
Yi He
School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Supervision (supporting), Validation (supporting), Writing - review & editing (lead)
Search for more papers by this authorRongmei Su
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Conceptualization (lead), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Project administration (lead), Resources (lead), Software (lead), Validation (lead), Visualization (lead), Writing - original draft (lead)
Search for more papers by this authorPu Huang
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Contribution: Conceptualization (supporting), Data curation (supporting), Formal analysis (supporting), Resources (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorLin Gan
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Conceptualization (supporting), Data curation (supporting), Investigation (supporting), Methodology (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorShuiping Zhou
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Contribution: Investigation (supporting), Methodology (supporting), Project administration (supporting), Visualization (supporting), Writing - original draft (supporting)
Search for more papers by this authorXiaoan Li
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Contribution: Software (supporting), Validation (supporting), Visualization (supporting)
Search for more papers by this authorCorresponding Author
Wei Li
National Key Laboratory of Aerospace Chemical Power, Hubei Institute of Aerospace Chemotechnology, Xiangyang, Hubei, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Funding acquisition (supporting), Writing - review & editing (supporting)
Search for more papers by this authorCorresponding Author
Jin Huang
Chongqing Key Laboratory of Soft-Matter Material Manufacturing, Department of Chemistry and Chemical Engineering, Southwest University, Chongqing, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Funding acquisition (lead), Project administration (lead), Resources (lead), Validation (lead), Writing - review & editing (lead)
Search for more papers by this authorCorresponding Author
Yi He
School of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong, China
Correspondence:
Wei Li ([email protected])
Jin Huang ([email protected])
Yi He ([email protected])
Contribution: Supervision (supporting), Validation (supporting), Writing - review & editing (lead)
Search for more papers by this authorFunding: This research is financially supported by the funded by Open Research Fund Program of the National Key Laboratory of Aerospace Chemical Power (NKLACP120241B02).
ABSTRACT
Self-healing polyurethane elastomers with dynamic crosslinking networks are promising candidates for intelligent next-generation coatings. However, their constitutive relation shows conflicts between high mechanical performance and room-temperature self-healing, as well as recyclability. Here, a regulation strategy of a dynamic triple-crosslinked network in the hard domain was proposed to achieve multifunction enhancement via covalent borate ester bonds coupling noncovalent. The distribution and ratio of borate ester bonds, boron-nitrogen coordination bonds, and multiple hydrogen bonds were meticulously designed to balance fracture and reconstruction of the molecular network. The introduced borate ester bonds enabled the basic room-temperature self-healing and mechanical performance of polyurethane elastomers through molecule-level topological evolution. The designed boron-nitrogen coordination bonds and abundant hydrogen bonds provided external noncovalent reversible crosslinking networks, thus improving tensile strength and toughness as physical crosslinking points. The obtained polyurethane elastomers exhibited impressive light transmittance of 93%, a tensile strength of 41.07 MPa, elongation at break of 1673.20%, toughness of 166.74 MJ m−3, and almost entirely room-temperature self-healing in 48 h. These polyurethane elastomers even maintained 90% of their original mechanical properties after suffering three recycles. This strategy may promote the practical application of intelligent self-healing polyurethane coatings in the automobile and flexible electronic industry.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
| Filename | Description |
|---|---|
| app56981-sup-0001-Supporting_Information.docxWord 2007 document , 7.9 MB |
Data S1. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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