A novel approach for the closure of large damage in self-healing elastomers using magnetic particles

Cerdan, Kenneth; Assche, Guy Van; Puyvelde, Peter Van; Brancart, Joost

doi:10.1016/j.polymer.2020.122819

Cited by 29 publications

(29 citation statements)

References 51 publications

(55 reference statements)

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“…Upon heating, the integrated shape memory effect brings fracture surfaces back together, prior to binding them back together (213) or curing using a healing agent (99,100,214). Magnetic particles have been added to SHM to close large damages using an applied magnetic field (216,217).…”

Section: Limitations Of Artificial Self-healing Polymersmentioning

confidence: 99%

A review on self-healing polymers for soft robotics

et al. 2021

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Section: Limitations Of Artificial Self-healing Polymersmentioning

confidence: 99%

A review on self-healing polymers for soft robotics

et al. 2021

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“…It should be noted that one of the most important parameters in healing efficiency is a proper realignment after encountering large damages. As an example of an autonomous approach, Carden et al have developed a magnetic composite material for damage closure [42].…”

Section: A Healing Quality Assessmentmentioning

confidence: 99%

A Healable Resistive Heater as a Stimuli-Providing System in Self-Healing Soft Robots

Tabrizian

Sahraeeazartamar²,

Brancart

et al. 2022

IEEE Robot. Autom. Lett.

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Self-healing polymers can address the damage susceptibility in soft robotics. However, in most cases, their healing requires a heat stimulus, provided by an external device. This paper presents a self-healing soft actuator with an integrated healable flexible heater, functioning as the stimuliproviding system. The actuator is constructed out of thermoreversible elastomers that are crosslinked by the Diels-Alder (DA) reaction, which provides the healing ability. The heater is manufactured from a DA-based composite network filled with 20 wt% carbon black to provide electrically conductive properties for resistive Joule heating. The flexibility of the heater does not compromise the actuator performance upon integration and the self-healing properties of both heater and actuator allow for damage repair. This includes very large damages, as both heater and actuator can recover (near 100%) from being cut completely in two pieces, using Joule heating at 90 °C with a bias voltage of about 30 V. The embedded heater avoids the need for external intervention in the healing process, and provides healing quality assessment and a healing ondemand mechanism, paving the way for an optimum healing solution of damage resilient soft robots that require heat as a healing stimulus.

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“…Mixing magnetic (nano)particles in the initial unreacted monomer mixture, under reprocessing upon degelation or in the presence of a solvent, intrinsically leads to strong magnetic (nano)particle interactions and the sedimentation of aggregates or the formation of strong percolated structures in these low-viscosity systems. These are known to take a predominant role in the rheological behaviour and mechanical performance of the composites [56]. This is detrimental to some applications for which finely dispersed magnetic NPs are required, such as MRI or inductive heating.…”

Section: Direct Mixing and Dispersion Of Magnetic (Nano)particles In ...mentioning

confidence: 99%

“…Cerdan et al took another approach to obtain large damage recovery using magnetostriction of the broken surfaces (Figure 7b). This magnetically driven self-healing method enabled the repair of wide damage areas (several millimetres) by promoting the closure of the damage surfaces by an external magnetic field [56]. This approach is particularly interesting to develop soft robotics systems that perform their actuation duties in harsh, aggressive environments.…”

Section: Actuatorsmentioning

confidence: 99%

“…These contain Nd2Fe14B magnetized mistrips within their structures, and as such, upon failure during swimming, the (a) Magnetic self-healing composite actuation using the shape-memory response under heating caused by a remote alternating magnetic field (adapted with permission from [51]. Copyright 2018, American Chemical Society); (b) magnetostriction-aided large damage healing (damage gap size of 4 mm-5 mm; adapted with permission from [56]. Copyright 2020, Elsevier; and (c) magnetic swimmer autonomously repaired "on-the-fly" using printed magnetic microparticles strips.…”

Section: Actuatorsmentioning

confidence: 99%

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Magnetic Self-Healing Composites: Synthesis and Applications

et al. 2022

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Magnetic composites and self-healing materials have been drawing much attention in their respective fields of application. Magnetic fillers enable changes in the material properties of objects, in the shapes and structures of objects, and ultimately in the motion and actuation of objects in response to the application of an external field. Self-healing materials possess the ability to repair incurred damage and consequently recover the functional properties during healing. The combination of these two unique features results in important advances in both fields. First, the self-healing ability enables the recovery of the magnetic properties of magnetic composites and structures to extend their service lifetimes in applications such as robotics and biomedicine. Second, magnetic (nano)particles offer many opportunities to improve the healing performance of the resulting self-healing magnetic composites. Magnetic fillers are used for the remote activation of thermal healing through inductive heating and for the closure of large damage by applying an alternating or constant external magnetic field, respectively. Furthermore, hard magnetic particles can be used to permanently magnetize self-healing composites to autonomously re-join severed parts. This paper reviews the synthesis, processing and manufacturing of magnetic self-healing composites for applications in health, robotic actuation, flexible electronics, and many more.

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A novel approach for the closure of large damage in self-healing elastomers using magnetic particles

Cited by 29 publications

References 51 publications

A review on self-healing polymers for soft robotics

A review on self-healing polymers for soft robotics

A Healable Resistive Heater as a Stimuli-Providing System in Self-Healing Soft Robots

Magnetic Self-Healing Composites: Synthesis and Applications

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