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

Runtian Qie, Saeed Zajforoushan Moghaddam, Esben Thormann*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

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.

Original languageEnglish
JournalACS Applied Polymer Materials
Volume5
Issue number3
Pages (from-to)1646-1650
ISSN2637-6105
DOIs
Publication statusPublished - 2023

Keywords

  • Biomimicry
  • Coacervation
  • Curable
  • Marine adhesives
  • Underwater adhesive

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