An antibacterial hydrogel with desirable mechanical, self-healing and recyclable properties based on triple-physical crosslinking

Pan, Jiezhou; Jin, Yong; Lai, Shuangquan; Shi, Liangjie; Fan, Wuhou; Shen, Yichao

doi:10.1016/j.cej.2019.04.001

Cited by 110 publications

(68 citation statements)

References 50 publications

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“…The products of photooxidation, due to the effect of electronic rearrangement in the glucose ring, range from the breakdown of the glycosidic group, the formation of carbonyl groups, to the ring-opening. Figure S1 illustrates the micrographs treated with UV radiation (5,10,15, and 20 min) and without radiation (0 min). Compared with the 0 min, there are changes in the morphology of the samples, suggesting that UV treatment not only causes degradation, but also structural differences.…”

Section: Discussionmentioning

confidence: 99%

Curing of Cellulose Hydrogels by UV Radiation for Mechanical Reinforcement

et al. 2021

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The use of biomaterials as a replacement for thermoplastic polymers is an environmentally sound strategy. In this work, hydrogels of cellulose isolated from wheat husk were modified by UV irradiation (353 nm) to improve mechanical performance. The cellulose was dissolved with a solvent system N,N-dimethylacetamide/lithium chloride (DMAc/LiCl). Infrared spectroscopy showed that the peak height at 1016 cm−1, associated with the C–O bonds of the glycosidic ring, increases with irradiation time. It was determined that the increase in this signal is related to photodegradation, the product of a progressive increase in exposure to UV radiation. The viscoelastic behavior, determined by dynamic mechanical analysis and rotational rheometry, was taken as the most important parameter of this research, showing that the best results are recorded with 15 min of UV treatment. Therefore, at this time or less, the chemical crosslinking is predominant over the photodegradation, producing an increase in the modules, while with 20 min the photodegradation is such that the modules suffer a significant reduction.

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Section: Discussionmentioning

confidence: 99%

Curing of Cellulose Hydrogels by UV Radiation for Mechanical Reinforcement

et al. 2021

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“…[ 9,10,117,152 ] Under mechanical forces, metal‐ligand complexes dissociate, and their reformation leads to self‐healing. Abundant metal ions are available for forming metal‐ligand bonds, covering Zn 2+ , [ 153 ] Ca 2+ , [ 154–156 ] Pt 2+ , [ 157 ] Fe 3+ , [ 158 ] Al 3+ , [ 159 ] and Eu 3+ , [ 116 ] etc. A hybrid gel that synergized the dynamic assembly/disassembly nature of metal‐ligand supramolecule and the conductive nanostructure of PPY hydrogel was constructed using 2,2′:6′,2″‐terpyridine as organic ligand and Zn 2+ as a central ion.…”

Section: Stretching and Self‐healing Strategiesmentioning

confidence: 99%

Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

Cheng

Zhang

Wang

et al. 2021

Adv Funct Materials

215

115

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Stretchable self‐healing supercapacitors (SCs) can operate under extreme deformation and restore their initial properties after damage with considerably improved durability and reliability, expanding their opportunities in numerous applications, including smart wearable electronics, bioinspired devices, human–machine interactions, etc. It is challenging, however, to achieve mechanical stretchability and self‐healability in energy storage technologies, wherein the key issue lies in the exploitation of ideal electrode and electrolyte materials with exceptional mechanical stretchability and self‐healing ability besides conductivity. Conductive hydrogels (CHs) possess unique hierarchical porous structure, high electrical/ionic conductivity, broadly tunable physical and chemical properties through molecular design and structure regulation, holding tremendous promise for stretchable self‐healing SCs. Hence, this review is innovatively constructed with a focus on stretchable and self‐healing CH based electrodes and electrolytes for SCs. First, the common synthetic approaches of CHs are introduced; then the stretching and self‐healing strategies involved in CHs are systematically elaborated; followed by an explanation of the conductive mechanism of CHs; then focusing on CH‐based electrodes and electrolytes for stretchable self‐healing SCs; subsequently, application of stretchable and self‐healing SCs in wearable electronics are discussed; finally, a conclusion is drawn along with views on the challenges and future research directions regarding the field of CHs for SCs.

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“…Hydrogels are highly hydrophilic 3D network structures with high flexibility, elasticity, and softness. [211][212][213][214] All hydrophilic or water-soluble polymers can be used to form hydrogels through physical [215][216][217][218] or chemical crosslinking [219][220][221] using crosslinkers such as chitosan, alginates, pullulan, fibrin and elastin, collagen, acrylic acid, polyvinyl alcohol (PVA) etc. Hydrogel is environmentally friendly with excellent biocompatibility, biodegradability, and low cytotoxicity.…”

Section: Natural Materials Derived Hydrogelmentioning

confidence: 99%

Bio‐Derived Natural Materials Based Triboelectric Devices for Self‐Powered Ubiquitous Wearable and Implantable Intelligent Devices

Yang

Fan

2020

Advanced Sustainable Systems

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The capability of devices in future ubiquitous networked wearable and implantable electronics to efficiently scavenge and store operational power from their working environment through sustainable pathways would enable viable self‐powering schemes in societally‐pervasive applications such as advanced healthcare and robotics. Triboelectric nanogenerators (TENGs) can efficiently harvest the ubiquitous mechanical energy for powering electronics and sensors. However, the majority of demonstrated TENG prototypes have been built with materials that are not biodegradable or biocompatible, which significantly hinders the application of TENGs for wearable and implantable technologies. In this review, the recent progress of the wearable and implantable triboelectric devices built with bio‐derived natural materials is summarized. The properties of these natural biopolymers are discussed in the context of self‐powered triboelectric applications. The common manufacturing methods for processing these materials into triboelectric devices are also discussed. In addition, the applications of the bio‐derived natural materials based TENGs for in vitro and in vivo applications are discussed. Finally, the outstanding challenges and potential opportunities for the development of bio‐derived natural materials based triboelectric devices targeting wearable and implantable human‐integrated applications are analyzed.

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An antibacterial hydrogel with desirable mechanical, self-healing and recyclable properties based on triple-physical crosslinking

Cited by 110 publications

References 50 publications

Curing of Cellulose Hydrogels by UV Radiation for Mechanical Reinforcement

Curing of Cellulose Hydrogels by UV Radiation for Mechanical Reinforcement

Conductive Hydrogel‐Based Electrodes and Electrolytes for Stretchable and Self‐Healable Supercapacitors

Bio‐Derived Natural Materials Based Triboelectric Devices for Self‐Powered Ubiquitous Wearable and Implantable Intelligent Devices

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