A Curable Underwater Adhesive Based on Poly(propylene oxide) and Tannic Acid Coacervate

Coacervation of poly­(propylene oxide) and tannic acid, driven by hydrogen bonding, renders a tacky viscous material that provides an underwater adhesion strength of ∼350–550 kPa on aluminum substrates and also can bond other wet surfaces such as glass, metal, plastic, and porcelain. A curing functi...

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Bibliographic Details
Published in:ACS applied polymer materials 2023-03, Vol.5 (3), p.1646-1650
Main Authors: Qie, Runtian, Zajforoushan Moghaddam, Saeed, Thormann, Esben
Format: Article
Language:English
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Summary:Coacervation of poly­(propylene oxide) and tannic acid, driven by hydrogen bonding, renders a tacky viscous material that provides an underwater adhesion strength of ∼350–550 kPa on aluminum substrates and also can bond other wet surfaces such as glass, metal, plastic, and porcelain. A curing functionality is achieved by designing a two-component system, using epoxidized poly­(propylene oxide)/tannic acid coacervate as part A and amine-terminated poly­(propylene oxide) as part B. Aside from underwater bonding, this adhesive can cure underwater through amine-epoxide reactions providing a commercially competitive and waterproof bonding.
ISSN:2637-6105
2637-6105
DOI:10.1021/acsapm.2c02018