Issue 36, 2020

A high-strength double network polydopamine nanocomposite hydrogel for adhesion under seawater

Abstract

Mussel-inspired catechol-based strategy has been widely used in the development of underwater adhesives. Nonetheless, the properties of the adhesives were still severely limited under harsh environments. A facile approach was proposed herein to prepare a double network hydrogel adhesive with low swelling rate and high strength in seawater, where the first network was polyacrylamide (PAM) and the second network was alginate (Alg). Meanwhile, polydopamine (PDA) nanoparticles, which were formed through self-polymerization as adhesion anchoring sites, distributed evenly throughout the double network hydrogel and effectively enhanced the adhesion capability of the hydrogel. The properties of the resulting hydrogel have been fully characterized. The optimal adhesion strength of the hydrogel adhesive in seawater was as high as 146.84 ± 7.78 kPa. Furthermore, the hydrogel also has excellent ability to promote the growth of zooxanthellae. Our studies provide useful insights into the rational design of underwater adhesives with high performances even beyond nature.

Graphical abstract: A high-strength double network polydopamine nanocomposite hydrogel for adhesion under seawater

Supplementary files

Article information

Article type
Paper
Submitted
25 fev 2020
Accepted
29 iyn 2020
First published
02 iyl 2020

J. Mater. Chem. B, 2020,8, 8232-8241

A high-strength double network polydopamine nanocomposite hydrogel for adhesion under seawater

M. Liang, C. He, J. Dai, P. Ren, Y. Fu, F. Wang, X. Ge, T. Zhang and Z. Lu, J. Mater. Chem. B, 2020, 8, 8232 DOI: 10.1039/D0TB00513D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements