Scalable Underwater Adhesives with High-Strength, Long-Term, and Harsh-Environment Adhesion Enabled by Heterocyclic Chemistry,ACS Applied Materials & Interfaces

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Scalable Underwater Adhesives with High-Strength, Long-Term, and Harsh-Environment Adhesion Enabled by Heterocyclic Chemistry
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-07-26 , DOI: 10.1021/acsami.3c07112
Feng Li ₁ , Weidong Gu ₂ , Qiang Gao ₁ , Yi Tan ₁ , Cheng Li ₃ , Christian Sonne ₄ , Jianzhang Li ₁ , Ki-Hyun Kim ₅

Affiliation

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.

中文翻译：

通过杂环化学实现高强度、长期和恶劣环境粘合力的可扩展水下粘合剂

开发可扩展的高性能水下粘合剂在各种生物医学和工业应用中非常重要。然而，尽管付出了巨大的努力，这种粘合剂的实现仍然是一项具有挑战性的任务，这主要是由于难以通过有效的方式平衡界面和本体性能。在这里，我们报告了一种简单而有效的策略，利用杂环化学构建一种具有多种优势性能的新型水下粘合剂。这种粘合剂的设计结合了基于杂环的多功能粘合剂功能和具有可交联位点的环保亲水基体，其允许吸水破坏水化层，多种分子相互作用以增强界面粘合力，以及丰富的共价交联以增强界面粘合力。增强整体凝聚力。这种合理的设计赋予了粘合剂强大的水下附着力（木材可达1.16 MPa，聚四氟乙烯（PTFE）可达0.36 MPa）、长期耐用（4个月后仍保持原始强度）和恶劣环境稳定性。（盐、酸性/碱性、低温/高温溶液）。该策略也可以通用，衍生出更多的粘合剂配方，为设计具有高性能和可扩展性的下一代水下粘合剂的实际应用提供了新的方向。

更新日期：2023-07-26

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