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Thermoresponsive Complex Coacervate-Based Underwater Adhesive.

Authors
  • Dompé, Marco1
  • Cedano-Serrano, Francisco J2
  • Heckert, Olaf1
  • van den Heuvel, Nicoline1
  • van der Gucht, Jasper1
  • Tran, Yvette2
  • Hourdet, Dominique2
  • Creton, Costantino2
  • Kamperman, Marleen1, 3
  • 1 Laboratory of Physical Chemistry and Soft Matter, Wageningen University & Research, Stippeneng 4, 6708 WE, Wageningen, The Netherlands. , (Netherlands)
  • 2 Soft Matter Sciences and Engineering, ESPCI Paris, PSL University, Sorbonne University, CNRS, F-75005, Paris, France. , (France)
  • 3 Polymer Science, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands. , (Netherlands)
Type
Published Article
Journal
Advanced Materials
Publisher
Wiley (John Wiley & Sons)
Publication Date
May 01, 2019
Volume
31
Issue
21
Identifiers
DOI: 10.1002/adma.201808179
PMID: 30924992
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Sandcastle worms have developed protein-based adhesives, which they use to construct protective tubes from sand grains and shell bits. A key element in the adhesive delivery is the formation of a fluidic complex coacervate phase. After delivery, the adhesive transforms into a solid upon an external trigger. In this work, a fully synthetic in situ setting adhesive based on complex coacervation is reported by mimicking the main features of the sandcastle worm's glue. The adhesive consists of oppositely charged polyelectrolytes grafted with thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) chains and starts out as a fluid complex coacervate that can be injected at room temperature. Upon increasing the temperature above the lower critical solution temperature of PNIPAM, the complex coacervate transitions into a nonflowing hydrogel while preserving its volume-the water content in the material stays constant. The adhesive functions in the presence of water and bonds to different surfaces regardless of their charge. This type of adhesive avoids many of the problems of current underwater adhesives and may be useful to bond biological tissues. © 2019 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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