Stretchable, healable, and weldable vitrimer ionogel for ionotronic applications

Bui, Khoa; T.M Nguyen, Giao; Vancaeyzeele, Cedric; Vidal, Frederic; Hu, Xiao; Wan, Chaoying; Plesse, Cedric

doi:10.1016/j.cej.2023.145533

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…For example, Cedric developed a type of vitrimer gel based on transesterification through the epoxy ring-opening reaction with carboxylic acids of functionalized poly (ethylene glycol) (PEG) and triglycidyl ether crosslinkers. It exhibits a good maximum strain (300%), high conductivity, and full recovery, allowing it to be used as a strain sensor, soft electrode, and ionic cable [ 71 ].…”

Section: Strategies and Properties Of Tough Hydrogelsmentioning

confidence: 99%

Tough Hydrogels with Different Toughening Mechanisms and Applications

Xu,

Chen,

Cao

et al. 2024

IJMS

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Load-bearing biological tissues, such as cartilage and muscles, exhibit several crucial properties, including high elasticity, strength, and recoverability. These characteristics enable these tissues to endure significant mechanical stresses and swiftly recover after deformation, contributing to their exceptional durability and functionality. In contrast, while hydrogels are highly biocompatible and hold promise as synthetic biomaterials, their inherent network structure often limits their ability to simultaneously possess a diverse range of superior mechanical properties. As a result, the applications of hydrogels are significantly constrained. This article delves into the design mechanisms and mechanical properties of various tough hydrogels and investigates their applications in tissue engineering, flexible electronics, and other fields. The objective is to provide insights into the fabrication and application of hydrogels with combined high strength, stretchability, toughness, and fast recovery as well as their future development directions and challenges.

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Section: Strategies and Properties Of Tough Hydrogelsmentioning

confidence: 99%

Tough Hydrogels with Different Toughening Mechanisms and Applications

Xu,

Chen,

Cao

et al. 2024

IJMS

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“…By simply blending with acrylamide (AM) and undergoing UV irradiation polymerization, we achieved a spontaneously formed phase-separated structure between the hydrophilic polyacrylamide network and the hydrophobic fluorinated ion polymer network. Unlike pure ionogel with soft properties, , the enriched polyacrylamide network in our prepared P([MATAC][TFSI]- co -AM) can form hydrogen-bonding regions and improve the cohesion. P([MATAC][TFSI]- co -AM) exhibits stretchability (570%), excellent toughness (9.58 MJ/m 3 ), ionic conductivity (0.08 S/m), and repetitive adhesion strength (0.692 MPa).…”

Section: Introductionmentioning

confidence: 99%

A Tough and Reusable Ionogel Adhesive for Flexible Strain Sensor

Qi,

Liu,

Zhao

et al. 2024

ACS Appl. Polym. Mater.

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Ionogels have gained increasing attention in the field of flexible electronic devices. However, it is a huge challenge to prepare ionogels with high toughness and adhesive property. In this study, we present a straightforward approach to fabricating tough and reusable ionogel adhesives by randomly copolymerizing two monomers with varying solubilities in an ionic liquid solvent. Specifically, acrylamide (AM) and methacryloxyethyltrimethylammonium bis(trifluoromethanesulfonyl)imide ([MATAC]-[TFSI]) are copolymerized in situ in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIM][TFSI]) to form phase-separated ionogels, wherein the hydrogen-bond-rich phases and solvent-rich phases contribute to enhancing toughness. The abundant noncovalent interactions provide the robust internal cohesive force, which provides ionogels a stable adhesion ability during the cyclic adhesion−peeling process. The resulting ionogel adhesive exhibits elevated fracture strength (2.75 MPa), impressive toughness (9.58 MJ/m 3 ), non-disposable adhesiveness (0.692 MPa), and exceptional environmental stability. Moreover, the sensor prepared by ionogel adhesives demonstrates fatigue resistance and a wide detection range, thus holding potential for the development of advanced and sustainable flexible electronic devices.

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Water‐Assisted Reprocessing and Shape Programming of Epoxy Vitrimer

Xu,

Zhou,

Fang

et al. 2024

Adv Funct Materials

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Vitrimers are reprocessing and recycling thermosetting plastics. They possess reconfigurable polymer networks that allow for unlimited transformation in shape in principle. However, current strategies to reshape the vitrimers typically involve heat or light, which often induces undesirable oxidation and decomposition. To address this issue, here a water‐assisted approach is proposed for programming epoxy vitrimers’ shapes. In this design, water molecules are utilized to reversibly dissociate the hydrogen bonds in epoxy vitrimers to enable the polymer segments to move flexibly. The hydrated epoxy vitrimers can then be reprogrammed and retained into different temporary shapes by removing the water. Such samples would be recovered to their original shapes by rehydration, exhibiting water‐induced shape memory property. More than temporary deformation, the permanent figures of the hydrated vitrimers can also be permanently changed at room temperature (rt) or elevated temperatures in the presence of transesterification catalysts. Combing the shape memory and high temperature plasticity or utilizing rt plasticity, sophisticated shapes such as spiral shapes are demonstrated. It is envisioned that this water‐assisted methodology can be useful in programming cross‐linked polymers into diverse 3D structures, which has wide practical applications in soft robots, deployable devices, aerospace materials, etc.

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Stretchable, healable, and weldable vitrimer ionogel for ionotronic applications

Cited by 7 publications

References 34 publications

Tough Hydrogels with Different Toughening Mechanisms and Applications

Tough Hydrogels with Different Toughening Mechanisms and Applications

A Tough and Reusable Ionogel Adhesive for Flexible Strain Sensor

Water‐Assisted Reprocessing and Shape Programming of Epoxy Vitrimer

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