Self-healing flexible and strong hydrogel nanocomposites based on polyaniline for supercapacitors

Lai, Fenglin; Fang, Zeming; Cao, Lin; Li, Wei; Lin, Zhidan; Zhang, Peng

doi:10.1007/s11581-020-03438-3

Cited by 46 publications

(39 citation statements)

References 48 publications

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“…Here glycerol and phytic acid used to form reversible hydrogen bonds with PVA and function as the cross‐linkers. The electrolyte material was fabricated without adding PANI‐carbon nanotubes 68 . Table 4 shows some of the most recent examples of potential applications of hydrogels.…”

Section: Properties Modifications and Applicationsmentioning

confidence: 99%

Synthetic hydrogels: Synthesis, novel trends, and applications

Madduma‐Bandarage

Madihally

2020

J of Applied Polymer Sci

256

167

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Hydrogels have been generated and explored for use in various applications. The main objective of this comprehensive review is to collate the fundamental concepts of hydrogels, and elaborate on knowledge gaps, and to provide a perspective on the future directions. This review includes details of constituent molecules (monomers, cross‐linkers, composite materials, etc.) and the methods used to prepare polymer networks. Moreover, the review highlights modifications of hydrogels that introduce new properties or enhance the existing features to suit the desired applications and challenges of synthetic polymer hydrogels. The other important topics covered in this review are the synthesis and applications of 3D printed hydrogels, nanocomposite hydrogels, injectable hydrogels, and self‐healing hydrogels.

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Section: Properties Modifications and Applicationsmentioning

confidence: 99%

Synthetic hydrogels: Synthesis, novel trends, and applications

Madduma‐Bandarage

Madihally

2020

J of Applied Polymer Sci

256

167

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“…Similar observations have been made for polymeric NPs, which have been shown to improve the mechanical strength of hydrogels as well as their sensitivity to stimuli for drug delivery applications [ 25 , 26 ]. Researchers have also explored incorporating nanoparticles to enhance the electrical and thermal properties along with the mechanical properties of hydrogels ( Table 2 ) [ 19 , 23 , 45 , 46 , 50 ]. For instance, carbon-based nanomaterials have been shown to improve the electrical and thermal properties of hydrogels and extend their applicability for the development of wearable devices; carbon nanotubes can be incorporated to add thermal stability and electric conductivity, while graphene oxide can add thermal responsiveness [ 19 , 23 , 45 , 46 , 50 ].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have also explored incorporating nanoparticles to enhance the electrical and thermal properties along with the mechanical properties of hydrogels ( Table 2 ) [ 19 , 23 , 45 , 46 , 50 ]. For instance, carbon-based nanomaterials have been shown to improve the electrical and thermal properties of hydrogels and extend their applicability for the development of wearable devices; carbon nanotubes can be incorporated to add thermal stability and electric conductivity, while graphene oxide can add thermal responsiveness [ 19 , 23 , 45 , 46 , 50 ]. Nanoparticles have also been used to improve the properties of IPN and DN hydrogels for a wide variety of applications (e.g., tissue engineering, antimicrobial hydrogels, and wearable devices) [ 5 , 14 , 22 , 31 , 34 , 41 ].…”

Section: Introductionmentioning

confidence: 99%

“…A common theme among the aforementioned examples and the focus of this review is the improvements in more than one property of hydrogels due to the incorporation of nanoparticles, allowing their use for biomedical applications and differentiating our work from others. By improving and adding to the physical and biochemical properties beyond simply the mechanical properties, hydrogel nanocomposites have found broad applicability in biomedical sciences and engineering including use as adhesives, drug delivery agents, antimicrobial dressings, responsive inks for bioprinting, implantable scaffolds, flexible conductive sensors, and cell culture systems, as highlighted in Figure 2 [ 5 , 26 , 46 , 47 , 49 ]. It is important to note that other materials including aerogels, porous gel scaffolds filled with gas (instead of water), have broad applicability in biomedical contexts similar to nanocomposite hydrogels, but are outside the scope of this review and have been discussed by others [ 63 , 64 , 65 ].…”

Section: Introductionmentioning

confidence: 99%

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Multifunctional Hydrogel Nanocomposites for Biomedical Applications

2021

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Hydrogels are used for various biomedical applications due to their biocompatibility, capacity to mimic the extracellular matrix, and ability to encapsulate and deliver cells and therapeutics. However, traditional hydrogels have a few shortcomings, especially regarding their physical properties, thereby limiting their broad applicability. Recently, researchers have investigated the incorporation of nanoparticles (NPs) into hydrogels to improve and add to the physical and biochemical properties of hydrogels. This brief review focuses on papers that describe the use of nanoparticles to improve more than one property of hydrogels. Such multifunctional hydrogel nanocomposites have enhanced potential for various applications including tissue engineering, drug delivery, wound healing, bioprinting, and biowearable devices.

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“…[ 20 ] Among them, the main design methods are physical and chemical design concepts. The hydrogels prepared based on physical crosslinking interact through hydrogen bonding, [ 21,22 ] hydrophobic association, electrostatic interaction, [ 23 ] segment entanglement, [ 24 ] and other noncovalent [ 25,26 ] interactions, while the traditional chemical cross‐linking method mainly takes advantage of the interaction mode of dynamic binding. [ 27 ] That is, the dynamic exchange process occurs when the chain is broken, contributing to the self‐healing effect.…”

Section: Introductionmentioning

confidence: 99%

PVA/Agar Interpenetrating Network Hydrogel with Fast Healing, High Strength, Antifreeze, and Water Retention

Han

Fan

et al. 2020

Macro Chemistry & Physics

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concentration to achieve a self-healing ability and mechanical properties. [20] Among them, the main design methods are physical and chemical design concepts. The hydrogels prepared based on physical crosslinking interact through hydrogen bonding, [21,22] hydrophobic association, electrostatic interaction, [23] segment entanglement, [24] and other noncovalent [25,26] interactions, while the traditional chemical cross-linking method mainly takes advantage of the interaction mode of dynamic binding. [27] That is, the dynamic exchange process occurs when the chain is broken, contributing to the self-healing effect. At the same time, owing to the high water content, it is difficult for traditional hydrogels to avoid high water loss and early degradation during use. Additionally, their inherent properties such as light transmittance will be destroyed under freezing conditions. However, compared with the traditional hydrogel preparation methods, the multifunctional hydrogel requires more steps to synthesize, increasing the difficulty of preparation. Thus, it is a great challenge for traditional hydrogels to operate under complex working conditions such as high-and low-temperature fluctuations. Therefore, to improve the applicability of hydrogels under complex working conditions, various methods have been suggested, such as network interpenetrating structure hydrogels, [28] double network hydrogels, [29-31] nanocomposite structure hydrogels, [32-35] and host-guest supermolecule hydrogels. [36,37] Different from other methods, network interpenetrating structure hydrogels are multifunctionally designed to avoid the disadvantages of pure water loss and degradation of hydrogels due to the higher fault tolerance and compatibility. Polyvinyl alcohol (PVA) matrices can be utilized to achieve a balance of self-healing ability and mechanical properties and can be multifunctionalized by modification with a variety of composite products. PVA hydrogels are formed in a variety of ways. Moreover, hydrogen bond cross-linking or external dynamic binding can be introduced to achieve self-healing properties. The PVA hydrogel has a uniform network structure and large energy consumption capacity that make it extremely light transmissive and give it an outstanding comprehensive performance. These reversible and breakable high-density hydrogenbonded cross networks provide PVA hydrogels with self-healing effects at room temperature without any irritation or healing Traditional self-healing hydrogels have great application prospects in biological engineering because of their extremely high water content, but their durability cannot be easily guaranteed. Therefore, developing a rapid self-healing hydrogel with long-lasting water retention capacity is still a significant challenge. A highstrength and fast self-healing hydrogel with an interpenetrating double network based on polyvinyl alcohol/agar-ethylene glycol (PVA/agar-EG) is proposed. Polyvinyl alcohol (PVA) and agar are designed for the construction of the interpenetrating network. Further...

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Self-healing flexible and strong hydrogel nanocomposites based on polyaniline for supercapacitors

Cited by 46 publications

References 48 publications

Synthetic hydrogels: Synthesis, novel trends, and applications

Synthetic hydrogels: Synthesis, novel trends, and applications

Multifunctional Hydrogel Nanocomposites for Biomedical Applications

PVA/Agar Interpenetrating Network Hydrogel with Fast Healing, High Strength, Antifreeze, and Water Retention

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