Highly entangled elastomer with ultra-fast self-healing capability and high mechanical strength

Li, Yuan; Feng, Xianqi; Sui, Cong; Xu, Jun; Zhao, Wenpeng; Yan, Shouke

doi:10.1016/j.cej.2023.147689

Cited by 6 publications

(2 citation statements)

References 61 publications

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“…Although significant progress has been made in preparing self-healing polyacrylates, the self-healable acrylate resins with good mechanical properties under mild conditions need further development. 36 In this study, we prepared a self-healing polyacrylate through the combination of quadruple hydrogen bonds and dynamic disulfide bonds. The increased molecular hydrogen bond interaction and disulfide crosslinker endowed the final acrylate resin material with an excellent tensile strength of 5.48 MPa, fracture elongation to 437%, and a self-healing efficiency of 84% at 60 1C.…”

Section: Introductionmentioning

confidence: 99%

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Self-healing polyacrylates based on dynamic disulfide and quadruple hydrogen bonds

Du,

Zhong,

Zhao

et al. 2024

Soft Matter

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Self-healing polyacrylates based on dynamic disulfide and quadruple hydrogen bonds

Du,

Zhong,

Zhao

et al. 2024

Soft Matter

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A Magnetically Self‐Aligning, Fast Full‐Device Self‐Healing, Skin‐Attachable Liquid Metal Strain Sensor Based on Photothermal Polyurethane

Kim,

Lee

et al. 2024

Adv Funct Materials

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There is a growing need for research on self‐healing materials capable of spontaneously repairing physical damage, allowing the fabrication of highly durable wearable devices featuring flexibility and stretchability. Herein, the study reports on the fabrication of a novel, magnetically aligning, fully and rapidly self‐healing skin‐attachable biosensor based on newly synthesized photothermally self‐healing polyurethane. By introducing photothermal amine‐capped aniline trimers to selectively self‐healable polyurethane, the synthesized self‐healing polymer achieves a fast and high recovery rate of 81.1% from complete bisection upon laser irradiation for just 3 min. Additionally, a thin‐film type strain sensor fabricated via the spray patterning of liquid metal EGaIn as an electrode onto the surface of the self‐healing polymer exhibits a high sensitivity to strain from deformation, enabling the real‐time monitoring of bio‐signals. Furthermore, the integration of a magnetic aligning layer directly patterned and embedded onto the self‐healing polymer enhances the self‐healing performance of the sensor after damage by 4.3 times on average, compared to when using manual alignment. In short, this work demonstrates a high‐performance fully self‐healing electronic device via the synthesis of novel fast self‐healing photothermal polymers and the introduction of patterned liquid metal electrodes and magnetic alignment layers.

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Self‐Polymerized Tough and High‐Entanglement Zwitterionic Functional Hydrogels

Wei,

Yang,

Qiu

et al. 2024

Small

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Zwitterionic hydrogels exhibit great potential in biomedical applications due to their antifouling properties and biocompatibility. However, the single‐network structure of pure zwitterionic hydrogels leads to a low toughness and strength, limiting their application in biomedical fields. In this work, a high entanglement sulfobetaine methacrylate‐dopamine hydrogel (SBMA‐DA‐PE) with low cross‐linker content and high monomer concentration is prepared by using a dopamine oxidative radical polymerization method. Compared to a regular zwitterionic hydrogel, the SBMA‐DA‐PE hydrogel exhibits a 5‐fold increase in tensile fracture stress and a 10‐fold increase in compressive fracture stress. The SBMA‐DA‐PE hydrogel possesses excellent mechanical properties (the maximum compressive stress ≥4.85 MPa, the maximum compressive strain ≥90%). Besides, the non‐covalent interactions between catechol or ortho‐quinones within the SBMA‐DA‐PE hydrogel, combined with strong intermolecular electrostatic interactions, endow the SBMA‐DA‐PE hydrogel with great self‐healing capabilities and fatigue resistance. The SBMA‐DA‐PE hydrogel demonstrates low swellability and possesses good antifouling properties. Furthermore, the good printability and conductivity of the tough SBMA‐DA‐PE hydrogel endows it with new possibilities for developing biological 3D scaffolds and electronic devices. Overall, this work provides new insights into the preparation of zwitterionic hydrogels with high mechanical strength and multi‐functionality for biomedical applications.

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Highly entangled elastomer with ultra-fast self-healing capability and high mechanical strength

Cited by 6 publications

References 61 publications

Self-healing polyacrylates based on dynamic disulfide and quadruple hydrogen bonds

Self-healing polyacrylates based on dynamic disulfide and quadruple hydrogen bonds

A Magnetically Self‐Aligning, Fast Full‐Device Self‐Healing, Skin‐Attachable Liquid Metal Strain Sensor Based on Photothermal Polyurethane

Self‐Polymerized Tough and High‐Entanglement Zwitterionic Functional Hydrogels

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