Flowability of Gel-Matrix and Magnetorheological Response for Carrageenan Magnetic Hydrogels

Ikeda, Junko; Kurihara, Tomoki; Ogura, Keiju; Akama, Shota; Kawai, Mika; Mitsumata, Tetsu

doi:10.3390/gels7020056

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…Therefore, the resistant force from the polymer network is not observable at all. In fact, the change in storage modulus monotonously decreased with the carrageenan concentration at a carrageenan concentration of 70 wt.% and 500 mT, which is a simple result where the softer the gel, the larger the modulus change [ 15 ]. The change in storage modulus at 50 wt.% and 50 mT was also investigated for another objective (determination of the diameter of secondary particles) [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetic Response Detects the Strength of Carrageenan Network

Kaneko

Kawai

Mitsumata

2022

Gels

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The effect of carrageenan concentration on the magneto-rheological effect of magnetic gels with a magnetic particle concentration of 50 wt.% was investigated under a magnetic field of 50 mT by dynamic viscoelastic measurements. The change in the storage modulus for magnetic gels due to the magnetic field was 3.0 × 103 Pa at a carrageenan concentration of 1.0 wt.% and increased with the concentration. The modulus change showed a maximum of 2.3 × 104 Pa at ~2.0 wt.% and became lower at higher concentrations. This is an interesting phenomenon, which was first observed in this study. The critical strain, the strain where the storage modulus intersects the loss modulus in the strain dependence of the modulus, was much higher than that for carrageenan gels, indicating a strong interaction between the magnetic particles and carrageenan. At 0 mT, the critical strain for the magnetic gels increased remarkably with decreasing the concentration, indicating that magnetic gels have a structure that does not flow easily at concentrations below 1.75 wt.%. It is considered that the structure hardly flows, hindering the movement of particles. At high concentrations, the SEM photographs showed both a particle network of magnetic particles and a dense carrageenan network. It can be considered that the movement of magnetic particles was hindered due to these factors at high concentrations.

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Section: Introductionmentioning

confidence: 99%

Magnetic Response Detects the Strength of Carrageenan Network

Kaneko

Kawai

Mitsumata

2022

Gels

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“…In recent years, the focus of hydrogel research has gradually shifted from simple networks to "responsive" networks. Currently, a variety of hydrogels have been developed that can respond to changes in environmental conditions such as pH [112], temperature [113], and electric and magnetic felds [114]. On this basis, a variety of mechanical properties have been imparted to the hydrogels by physical or chemical means, further expanding the range of applications for the material.…”

Section: Hydrogels Were Used To Prepare the Evs Delivery Systemmentioning

confidence: 99%

Hydrogel-Loaded Exosomes: A Promising Therapeutic Strategy for Musculoskeletal Disorders

Zhang,

Zhou,

Wang

et al. 2023

Journal of Clinical Pharmacy and Therapeutics

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Clinical treatment strategies for musculoskeletal disorders have been a hot research topic. Accumulating evidence suggests that hydrogels loaded with MSC-derived EVs show great potential in improving musculoskeletal injuries. The ideal hydrogels should be capable of promoting the development of new tissues and simulating the characteristics of target tissues, with the properties matching the cell-matrix constituents of autologous tissues. Although there have been numerous reports of hydrogels loaded with MSC-derived EVs for the repair of musculoskeletal injuries, such as intervertebral disc injury, tendinopathy, bone fractures, and cartilage injuries, there are still many hurdles to overcome before the clinical application of modified hydrogels. In this review, we focus on the advantages of the isolation technique of EVs in combination with different types of hydrogels. In this context, the efficacy of hydrogels loaded with MSC-derived EVs in different musculoskeletal injuries is discussed in detail to provide a reference for the future application of hydrogels loaded with MSC-derived EVs in the clinical treatment of musculoskeletal injuries.

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“…Those facts stimulates the study of uncertainties in the MAE behavior and its critical character [29][30][31]. Attention should also be paid to the research of magnetoelastic coupling in MAEs [32][33][34][35], including the magnetorheological effect [21,[36][37][38][39][40][41][42][43][44][45], the magnetoelectric properties [46][47][48][49][50][51], and the shape memory effect [52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Spontaneous change of symmetry in a magnetoactive elastomer beam at its critical bending induced by a magnetic field

Каліта

Dzhezherya

Cherepov

et al. 2023

Smart Mater. Struct.

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The features of the critical bending deformation and magnetization of a magnetoactive elastomer (MAE) beam with a fixed end in a transverse uniform magnetic field have been studied. After the beam reaches a critical bending, the symmetry of the beam shape and the symmetry of the MAE magnetic state change spontaneously. At the critical point, a continuous transition from the highly symmetric magnetic state in the unbent MAE beam to the low symmetric magnetic state in the bent MAE beam (this is the angular state with the effective magnetization inclined to the field) takes place. The beam bending occurs due to the gain in the magnetic energy of the beam. The formation of an angular magnetic state in it has a magnetoelastic origin and is characterized by the critical behavior of the mutually related bending and longitudinal effective magnetization of the MAE, but it is the magnetization that plays the role of order parameter. Furthermore, there is no longitudinal magnetization in the absence of bending and, vice versa, there is no bending in the absence of longitudinal magnetization. The influence of a low remanent magnetization, which eliminates the uncertainty in the bending direction, on the critical bending has been analyzed. The role of the magnetorheological effect, which affects the critical field magnitude and leads to the appearance of field-induced bending hysteresis near the critical point, has also been elucidated.

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Flowability of Gel-Matrix and Magnetorheological Response for Carrageenan Magnetic Hydrogels

Cited by 6 publications

References 33 publications

Magnetic Response Detects the Strength of Carrageenan Network

Magnetic Response Detects the Strength of Carrageenan Network

Hydrogel-Loaded Exosomes: A Promising Therapeutic Strategy for Musculoskeletal Disorders

Spontaneous change of symmetry in a magnetoactive elastomer beam at its critical bending induced by a magnetic field

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