A general framework for the modeling of porous ferrogels at finite strains

Gebhart, Philipp; Wallmersperger, Thomas

doi:10.1016/j.jmps.2018.08.001

Cited by 30 publications

(15 citation statements)

References 40 publications

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“…Concerning the requirement of understanding the behaviour of these materials to tailor with the desired properties, various theoretical studies have been carried out, including the use of molecular dynamics [197][198][199][200][201][202][203][204][205][206]. For instance, Lopez-Lopez et al [207] evaluated the effect of the magnetic field-induced nanoparticle rearrangement on the shear elasticity of isotropic magnetic gels.…”

Section: Development and Properties Of Magnetic Gelsmentioning

confidence: 99%

Review on the advancements of magnetic gels: towards multifunctional magnetic liposome-hydrogel composites for biomedical applications

Veloso

Andrade

Castanheira

2021

Advances in Colloid and Interface Science

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Magnetic gels have been gaining great attention in nanomedicine, as they combine features of hydrogels and magnetic nanoparticles into a single system. The incorporation of liposomes in magnetic gels further leads to a more robust multifunctional system enabling more functions and spatiotemporal control required for biomedical applications, which includes on-demand drug release. In this review, magnetic gels components are initially introduced, as well as an overview of advancements on the development, tuneability, manipulation and application of these materials. After a discussion of the advantages of combining hydrogels with liposomes, the properties, fabrication strategies and applications of magnetic liposome-hydrogel composites (magnetic lipogels or magnetolipogels) are reviewed. Overall, the progress of magnetic gels towards smart multifunctional materials are emphasized, considering the contributions for future developments.

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Section: Development and Properties Of Magnetic Gelsmentioning

confidence: 99%

Review on the advancements of magnetic gels: towards multifunctional magnetic liposome-hydrogel composites for biomedical applications

Veloso

Andrade

Castanheira

2021

Advances in Colloid and Interface Science

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“…Likewise, the same incremental model can be developed to describe the multiphysics behaviour of other materials, which have been already extensively studied in the literature, e.g. ionic-polymer-metal composites [30][31][32], hydrogels [33,34], ferrogels [35], polymer membrane in electrochemical cells [36,37].…”

Section: Discussionmentioning

confidence: 99%

Swelling and shrinking in prestressed polymer gels: an incremental stress–diffusion analysis

2019

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Polymer gels are porous fluid-saturated materials which can swell or shrink triggered by various stimuli. The swelling/shrinking-induced deformation can generate large stresses which may lead to the failure of the material. In the present research, a nonlinear stress–diffusion model is employed to investigate the stress and the deformation state arising in hydrated constrained polymer gels when subject to a varying chemical potential. Two different constraint configurations are taken into account: (i) elastic constraint along the thickness direction and (ii) plane elastic constraint. The first step entirely defines a compressed/tensed configuration. From there, an incremental chemo-mechanical analysis is presented. The derived model extends the classical linear poroelastic theory with respect to a prestressed configuration. Finally, the comparison between the analytical results obtained by the proposed model and a particular problem already discussed in literature for a stress-free gel membrane (one-dimensional test case) will highlight the relevance of the derived model.

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“…The total energy-enthalpy density function is additively decomposed into a purely elastic contribution Ψ elas of the solid skeleton, a magneto-mechanical contribution Ψ mag and an energy contribution Ψ poro of the pore fluid, see also [4]. Additionally a convex and smooth dissipation functional is required to describe the Darcy-type fluid flux within the porous solid.…”

Section: Constitutive Modelingmentioning

confidence: 99%

Multiphysics modeling and simulation of fluid‐saturated porous ferrogels at finite strains

Gebhart

Wallmersperger

2019

Proc Appl Math and Mech

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Over the last years there has been a growing interest in the study of the behavior of field‐responsive or so called smart materials. Porous ferrogels are a class of these materials consisting of a porous polymeric matrix with dispersed micro‐ or nano‐sized ferromagnetic particles [1–3]. Due to their ability to exhibit large deformations and alter their effective material characteristics upon external magnetic stimulation, these materials are interesting for a wide range of applications in biomedical engineering, microfluidics and other innovative fields of research. The magneto‐poro‐mechanical response of porous ferrogels is a complex phenomenon that spans over multiple length‐scales and essentially depends on (i) the constitutive behavior of the individual components, (ii) their morphology and microstructural arrangement and (iii) the macroscopic shape of the specimen. In this contribution a theoretical and computational framework for the modeling of isotropic porous ferrogels at the macroscale is presented. Within this modeling approach the porous ferrogel is treated as a homogeneous continuum, whereat its complex microstructure is not resolved explicitly. A prototypical isotropic constitutive model is formulated in a conventional enthalpy‐based setting. Numerical examples show the the crucial impact of the macroscopic specimen shape on the macroscopic deformation response in an uniform external magnetic field.

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A general framework for the modeling of porous ferrogels at finite strains

Cited by 30 publications

References 40 publications

Review on the advancements of magnetic gels: towards multifunctional magnetic liposome-hydrogel composites for biomedical applications

Review on the advancements of magnetic gels: towards multifunctional magnetic liposome-hydrogel composites for biomedical applications

Swelling and shrinking in prestressed polymer gels: an incremental stress–diffusion analysis

Multiphysics modeling and simulation of fluid‐saturated porous ferrogels at finite strains

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