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Issue 22, 2014
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Silver nanoparticle aided self-healing of polyelectrolyte multilayers

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Self-healing is the ability of a material to repair mechanical damage. The lifetime of a coating or film might be lengthened with this capacity. Water enabled self-healing of polyelectrolyte multilayers has been reported, using systems that grow via the interdiffusion of polyelectrolyte chains. Due to high mobility of the polyelectrolyte chains within the assembly, it is possible for lateral diffusion to heal over scratches. The influence of metal ions and nanoparticles on this property has, however, not been previously studied. Here we demonstrate that the incorporation of silver nanoparticles reduced in situ within the branched poly(ethyleneimine)–poly(acrylic acid) polyelectrolyte multilayer structure speeds the ability of the multilayer assembly to self-heal. This enhancement of property seems to not be due to changes in mechanical properties but rather in enhanced affinity to water and plasticization that enables the film to better swell.

Graphical abstract: Silver nanoparticle aided self-healing of polyelectrolyte multilayers

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The article was received on 22 Jan 2014, accepted on 03 Apr 2014 and first published on 03 Apr 2014

Article type: Paper
DOI: 10.1039/C4CP00349G
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Citation: Phys. Chem. Chem. Phys., 2014,16, 10267-10273
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    Silver nanoparticle aided self-healing of polyelectrolyte multilayers

    X. Huang, M. J. Bolen and N. S. Zacharia, Phys. Chem. Chem. Phys., 2014, 16, 10267
    DOI: 10.1039/C4CP00349G

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