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

被引：62

作者：

Liang, Min ^{[1
]}

He, Chunpeng ^{[1
]}

Dai, Jidong ^{[1
]}

Ren, Pengfei ^{[1
]}

Fu, Yifu ^{[1
]}

Wang, Faming ^{[1
]}

Ge, Xin ^{[1
]}

Zhang, Tianzhu ^{[1
]}

Lu, Zuhong ^{[1
]}

机构：

[1] Southeast Univ, Sch Biol Sci & Med Engn, Natl Demonstrat Ctr Expt Biomed Engn Educ, State Key Lab Bioelect, Nanjing 210096, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY B | 2020年 / 8卷 / 36期

关键词：

ENHANCED WET ADHESION; SURFACE MODIFICATION; MUSSEL; CATECHOL; TOUGH; PROTEIN; MICROENVIRONMENT; POLYMERS; ALGINATE; COHESION;

D O I：

10.1039/d0tb00513d

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

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.

引用

页码：8232 / 8241

页数：10

共 52 条

[41] Mussel-Inspired Polyesters with Aliphatic Pendant Groups Demonstrate the Importance of Hydrophobicity in Underwater Adhesion [J].