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Issue 46, 2012
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The effect of ionic strength on the mechanical, structural and transport properties of peptide hydrogels

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Abstract

It is found that the elastic modulus of a peptide hydrogel increases linearly with the logarithm of its ionic strength. This result indicates that the elastic modulus of this class of hydrogels can be tuned by the ionic strength in a highly predictable manner. Small-angle X-ray scattering studies reveal that higher ionic strength leads to thinner but more rigid peptide fibers that are packed more densely. The self-diffusion coefficient of small molecules inside the hydrogel decreases linearly with its ionic strength, but this decrease is mainly a salt effect rather than diffusion barriers imposed by the hydrogel matrix.

Graphical abstract: The effect of ionic strength on the mechanical, structural and transport properties of peptide hydrogels

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Publication details

The article was received on 06 Jul 2012, accepted on 11 Sep 2012 and first published on 27 Sep 2012


Article type: Paper
DOI: 10.1039/C2SM26572A
Citation: Soft Matter, 2012,8, 11723-11731
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    The effect of ionic strength on the mechanical, structural and transport properties of peptide hydrogels

    Y. Feng, M. Taraban and Y. B. Yu, Soft Matter, 2012, 8, 11723
    DOI: 10.1039/C2SM26572A

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