Jump to main content
Jump to site search

Issue 14, 2010
Previous Article Next Article

Viscosity and interfacial properties in a mussel-inspired adhesive coacervate

Author affiliations

Abstract

The chemistry of mussel adhesion has commanded the focus of much recent research activity on wet adhesion. By comparison, the equally critical adhesive processing by marine organisms has been little examined. Using a mussel-inspired coacervate formed by mixing a recombinant mussel adhesive protein (fp-151-RGD) with hyaluronic acid (HA), we have examined the nanostructure, viscosity, friction, and interfacial energy of fluid-fluid phase-separated coacervates using the surface forces apparatus and microscopic techniques. At mixing ratios of fp-151-RGD:HA resulting in marginal coacervation, the coacervates showed shear-thickening viscosity and no structure by cryo-transmission electron microscopy (cryo-TEM). However, at the mixing ratio producing maximum coacervation, the coacervate showed shear-thinning viscosity and a transition to a bicontinuous phase by cryo-TEM. The shear-thinning viscosity, high friction coefficient (>1.2), and low interfacial energy (<1 mJ m−2) observed at the optimal mixing ratio for coacervation are promising delivery, spreading and adhesion properties for future wet adhesive and coating technologies.

Graphical abstract: Viscosity and interfacial properties in a mussel-inspired adhesive coacervate

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Feb 2010, accepted on 15 Mar 2010 and first published on 14 May 2010


Article type: Paper
DOI: 10.1039/C002632H
Citation: Soft Matter, 2010,6, 3232-3236
  •   Request permissions

    Viscosity and interfacial properties in a mussel-inspired adhesive coacervate

    D. S. Hwang, H. Zeng, A. Srivastava, D. V. Krogstad, M. Tirrell, J. N. Israelachvili and J. H. Waite, Soft Matter, 2010, 6, 3232
    DOI: 10.1039/C002632H

Search articles by author

Spotlight

Advertisements