3D Printing of Self‐Healing Materials

Roppolo, Ignazio; Caprioli, Matteo; Pirri, Candido F.; Magdassi, Shlomo

doi:10.1002/adma.202305537

Cited by 17 publications

(2 citation statements)

References 342 publications

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“…When the material is damaged, the chemical bonds in the damaged part break, giving the polymer chain segments the ability to move flexibly. The polymer chain segments interweave and intertwine with each other at the damaged site, while the dynamic chemical bonds are reformed at the damaged interface to repair the damaged site in the material [37]. Intrinsic SHCs are built by the introduction of dynamic chemical bonds (dynamic covalent and non-covalent bonds) (Fig.…”

Section: The Repair Mechanism Of Shcsmentioning

confidence: 99%

Recent advances in self-healing hydrogel composites for flexible wearable electronic devices

Tan,

Chu,

Chen

et al. 2024

Nano Research Energy

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Flexible electronic devices with mechanical properties like the soft tissues of human organs have great potential for the next generation of wearable and implantable electronic devices. Self-healing hydrogel composites typically have high tensile strength, high electrical conductivity and damage repair properties and have wide applications in flexible electronics, such as human-computer interaction, health detection and soft robots. Various self-healing hydrogel composites have been developed to produce new stretchable conductive materials with satisfactory mechanical and selfhealing properties. This paper presents the fabrication of self-healing hydrogel composites and their application in flexible electronic devices. Firstly, the repair mechanism of physically cross-linked and chemically cross-linked self-healing hydrogel composites is presented. Secondly, self-healing double network hydrogels, self-healing nanocomposite hydrogels and double crosslinked self-healing hydrogel composites and their applications in flexible sensors, energy harvesting devices, energy storage devices and optical devices are presented and discussed. Finally, the challenges and prospects of self-healing hydrogel composites in flexible electronic devices in the future are presented.

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Section: The Repair Mechanism Of Shcsmentioning

confidence: 99%

Recent advances in self-healing hydrogel composites for flexible wearable electronic devices

Tan,

Chu,

Chen

et al. 2024

Nano Research Energy

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“…Polymer based RTP materials, on the other hand, offer broad application prospects due to their better processability, high flexibility, and large-scale production capabilities. , Importantly, polymer RTP materials provide enormous opportunities for three-dimensional (3D) printing, allowing for the fabrication of complex shapes and structures of solid objects . Traditional RTP polymer materials are usually static and lack the mechanism of dynamic structural change for allowing on-demand phosphorescence emission, thus limiting their broader applications in specific scenarios, such as smart devices.…”

Section: Introductionmentioning

confidence: 99%

3D-Printable Room Temperature Phosphorescence Polymer Materials with On-Demand Modulation for Modulus Visualization and Anticounterfeiting Applications

Li,

Zhang,

Huang

et al. 2024

Chem Bio Eng.

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Conventional room temperature phosphorescence (RTP) polymer materials lack a dynamic structural change mechanism for on-demand phosphorescence emission, limiting their application in specific scenarios, such as smart devices. However, the development of RTP polymer materials with an ondemand emission capability is highly attractive yet rather challenging. Herein, we report a novel RTP polymer material that doped purely organic chromophores into a polymer network with numerous free hydroxyl side chains. This unique polymer material can be 3D printed with RTP activated through thermaltriggered nonequilibrium transesterification, where on-demand phosphorescence emission is achieved because of the increased cross-linking degrees such that the thermal motion of chromophores is effectively restricted. As a result, ultralong RTP emission is successfully observed due to enhanced stiffness in the polymer network. Importantly, the modulus changes of the polymer during nonequilibrium transesterification are intuitively visualized based on the intensity of phosphorescence emission. Through liquid crystal display (LCD) 3D printing, complex shaped and multimaterial structured objects are demonstrated, targeting the information encryption of printed objects and on-demand regional emission of multicolored phosphorescence. This study would provide an avenue to control RTP with on-demand emission and contributes to the field of anticounterfeiting and detection applications for intelligent RTP materials. Letter pubs.acs.org/ChemBioEng

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Stretchable, Self‐Healing, and Bioactive Hydrogel with High‐Functionality N,N′‐bis(acryloyl)cystamine Dynamically Bonded Ag@polydopamine Crosslinkers for Wearable Sensors

Shi,

Li,

Chen

et al. 2024

Advanced Science

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Hydrogels present attractive opportunities as flexible sensors due to their soft nature and tunable physicochemical properties. Despite significant advances, practical application of hydrogel‐based sensor is limited by the lack of general routes to fabricate materials with combination of mechanical, conductive, and biological properties. Here, a multi‐functional hydrogel sensor is reported by in situ polymerizing of acrylamide (AM) with N,N′‐bis(acryloyl)cystamine (BA) dynamic crosslinked silver‐modified polydopamine (PDA) nanoparticles, namely PAM/BA‐Ag@PDA. Compared with traditional polyacrylamide (PAM) hydrogel, the BA‐Ag@PDA nanoparticles provide both high‐functionality crosslinks and multiple interactions within PAM networks, thereby endowing the optimized PAM/BA‐Ag@PDA hydrogel with significantly enhanced tensile/compressive strength (349.80 kPa at 383.57% tensile strain, 263.08 kPa at 90% compressive strain), lower hysteresis (5.2%), improved conductivity (2.51 S m−1) and excellent near‐infrared (NIR) light‐triggered self‐healing ability. As a strain sensor, the PAM/BA‐Ag@PDA hydrogel shows a good sensitivity (gauge factor of 1.86), rapid response time (138 ms), and high stability. Owing to abundant reactive groups in PDA, the PAM/BA‐Ag@PDA hydrogel exhibits inherent tissue adhesiveness and antioxidant, along with a synergistic antibacterial effect by PDA and Ag. Toward practical applications, the PAM/BA‐Ag@PDA hydrogel can conformally adhere to skin and monitor subtle activities and large‐scale movements with excellent reliability, demonstrating its promising applications as wearable sensors for healthcare.

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3D Printing of Self‐Healing Materials

Cited by 17 publications

References 342 publications

Recent advances in self-healing hydrogel composites for flexible wearable electronic devices

Recent advances in self-healing hydrogel composites for flexible wearable electronic devices

3D-Printable Room Temperature Phosphorescence Polymer Materials with On-Demand Modulation for Modulus Visualization and Anticounterfeiting Applications

Stretchable, Self‐Healing, and Bioactive Hydrogel with High‐Functionality N,N′‐bis(acryloyl)cystamine Dynamically Bonded Ag@polydopamine Crosslinkers for Wearable Sensors

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