dc.creatorRizzi, L. G.
dc.date2018-05-03T18:15:38Z
dc.date2018-05-03T18:15:38Z
dc.date2017-12-29
dc.date.accessioned2023-09-27T20:43:56Z
dc.date.available2023-09-27T20:43:56Z
dc.identifier10897690
dc.identifierhttps://doi.org/10.1063/1.5012753
dc.identifierhttp://www.locus.ufv.br/handle/123456789/19321
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8946594
dc.descriptionRelations between static and dynamic viscoelastic responses in gels can be very elucidating and may provide useful tools to study the behavior of bio-materials such as protein hydrogels. An important example comes from the viscoelasticity of semisolid gel-like materials, which is characterized by two regimes: a low-frequency regime, where the storage modulus G (ω) displays a constant value Geq , and a high-frequency power-law stiffening regime, where G (ω) ∼ ωn . Recently, by considering Monte Carlo simulations to study the formation of peptides networks, we found an intriguing and somewhat related power-law relationship between the plateau modulus and the threshold frequency, i.e., Geq ∼ (ω∗ )∆ with ∆ = 2/3. Here we present a simple theoretical approach to describe that relationship and test its validity by using experimental data from a β-lactoglobulin gel. We show that our approach can be used even in the coarsening regime where the fractal model fails. Remarkably, the very same exponent ∆ is found to describe the experimental data.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherThe Journal of Chemical Physics
dc.relationv. 147, n. 24, p. 2449020-2449024, dec. 2017
dc.rightsPublished by AIP Publishing
dc.subjectPlateau modulus
dc.subjectPeptide gels
dc.titleOn the relationship between the plateau modulus and the threshold frequency in peptide gels
dc.typeArtigo


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