Scalable Underwater Adhesives with High-Strength, Long-Term, and Harsh-Environment Adhesion Enabled by Heterocyclic Chemistry
- Authors
- Li, Feng; Gu, Weidong; Gao, Qiang; Tan, Yi; Li, Cheng; Sonne, Christian; Li, Jianzhang; Kim, Ki-Hyun
- Issue Date
- Jul-2023
- Publisher
- American Chemical Society
- Keywords
- adhesive functionality; heterocyclic chemistry; high-performance adhesion; hydrophilic matrix; scalability; underwater adhesive
- Citation
- ACS Applied Materials and Interfaces, v.15, no.31, pp.37925 - 37935
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS Applied Materials and Interfaces
- Volume
- 15
- Number
- 31
- Start Page
- 37925
- End Page
- 37935
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189637
- DOI
- 10.1021/acsami.3c07112
- ISSN
- 1944-8244
- Abstract
- Developing scalable and high-performance underwater adhesives is important in various biomedical and industrial applications. However, despite massive efforts, the realization of such adhesives remains a challenging task, as mainly imposed by the difficulty in balancing the interfacial and bulk properties via an efficient way. Here, we report a facile yet effective strategy to construct a novel underwater adhesive with multiple advantaged performances by virtue of heterocyclic chemistry. This adhesive is designed with the cooperation of a heterocycle-based versatile adhesive functionality and an eco-friendly hydrophilic matrix with cross-linkable sites, which allows water absorption to destroy hydration layer, diverse molecular interactions to enhance interfacial adhesion, and abundant covalent crosslinks to strengthen bulk cohesion. Such a rational design endows the adhesive with strong underwater adhesion (up to 1.16 MPa for wood and 0.36 MPa for poly(tetrafluoroethylene) (PTFE)), long-term durability (maintaining pristine strength even after 4 months), and harsh-environment stability (salt, acidic/alkaline, low/high-temperature solutions). This strategy is also generic to derive more adhesive formulas, which offers a new direction for designing the next-generation underwater adhesives with high performance and scalability for practical applications.
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