Related Experiment Video
Updated: Aug 2, 2025

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
Published on: January 17, 2017
Viscous, Hofmeister Effect-Enhanced Macromolecular Adhesives for Effective Bonding in Seawater
Peng Sun1, Qingxi Wang2, Yongyu Wang2
1Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
Abstract:
Deployment of adhesives in natural seawater to in situ bonds is urgently needed in engineering fields. However, stable adhesion in natural seawater remains a challenge due to the turbulent environment and high ion concentration. Herein, we reported a viscous, macromolecular underwater adhesive enhanced by Hofmeister effect (EHUA) for practical application in dynamic seawater. EHUA was synthesized via a facile one-step copolymerization. After transferred into seawater, the solvent of EHUA was exchanged to seawater, and thereby hydrogen bonds inside the adhesive were activated and enhanced by Hofmeister effect. We demonstrated EHUA can adhere on the surface in turbulent seawater, and the adhesive strength could reach 1.691 MPa. In addition, the adhesives also exhibited long-term storage stability and convenient recyclability. These fascinating properties enable adhesives to seal leaky pipelines, repair damaged ships and construct buildings in turbulent seawater. This work may open an avenue for the design of adhesives for seawater environments.
More Related Videos
Related Concept Videos
Adhesion
Capillary action is a result of water’s adhesive tendencies. When a narrow...
Surface Tension, Capillary Action, and Viscosity
The various IMFs between identical molecules of a substance are examples of cohesive forces. The molecules within a liquid are surrounded by other molecules and are attracted equally in all directions by the cohesive forces within the liquid. However, the molecules on the surface of a liquid are attracted only by about one-half as many molecules. Because of the unbalanced molecular attractions on the surface molecules, liquids contract to form a shape that minimizes the number...
Cohesion
On a...
Intermolecular Forces
Noncovalent Attractions in Biomolecules
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
Bonding and Strength of Aggregate

