Protein-assisted freeze-tolerant hydrogel with switchable performance toward customizable flexible sensor

Wang, Yu; Yan, Xia; Xiang, Peng; Dai, Yuyin; Gao, Yang; Xu, Hong; Yu, Jun; Gao, Guanghui; Chen, Kexin

doi:10.1016/j.cej.2021.131171

Cited by 40 publications

(32 citation statements)

References 38 publications

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“…For the PAA/PANI-3 hydrogel sensor (Figure 5b), the GF value is 3.21 at low strain from 0% to 200% and increased to 6.11 at higher strain from 200% to 800%, then up to 12.63 under the highest strain range of 800-2000%, comparable to that of recently reported hydrogel sensors. [49][50][51][52] Figure 5c illustrates the change in resistance for the PAA/PANI-3 hydrogel sensor with various cyclic strains under a speed of 100 mm min −1 . It is noteworthy to mention that the sensor can work in a wide range from 1% to 400%, with outstanding reproducibility and reliability.…”

Section: Resultsmentioning

confidence: 99%

A Strand Entangled Supramolecular PANI/PAA Hydrogel Enabled Ultra‐Stretchable Strain Sensor

Liu

Zhou

Zhao

et al. 2022

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Hydrogel electronics have attracted growing interest for emerging applications in personal healthcare management, human‐machine interaction, etc. Herein, a “doping then gelling” strategy to synthesize supramolecular PANI/PAA hydrogel with a specific strand entangled network is proposed, by doping the PANI with acrylic acid (AA) monomers to avoid PANI aggregation. The high‐density electrostatic interaction between PAA and PANI chains serves as a dynamic bond to initiate the strand entanglement, enabling PAA/PANI hydrogel with ultra‐stretchability (2830%), high breaking strength (120 kPa), and rapid self‐healing properties. Moreover, the PAA/PANI hydrogel‐based sensor with a high strain sensitivity (gauge factor = 12.63), a rapid responding time (222 ms), and a robust conductivity‐based sensing behavior under cyclic stretching is developed. A set of strain sensing applications to precisely monitor human movements is also demonstrated, indicating a promising application prospect as wearable devices.

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Section: Resultsmentioning

confidence: 99%

A Strand Entangled Supramolecular PANI/PAA Hydrogel Enabled Ultra‐Stretchable Strain Sensor

Liu

Zhou

Zhao

et al. 2022

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“…Zhang and coworkers 62 prepared a hydrogel with repeated adhesion by polydopamine, which achieved the ability of electric conductivity solely depending on hydrogen and chlorine ions carried by the monomer dopamine hydrochloride. Wang and coworkers 63 prepared an anti-freezing hydrogel by introducing PVA and antifreeze proteins into a network copolymerized by acrylamide with sodium methacrylate (MAANa), in which the structural units of MAANa could ionize sodium ions easily. To the same end, Wang et al 27b & Zhou et al 64 both employed acrylic acid to copolymerize with a kind of cationic monomer namely 1-butyl-3-vinyl imidazolium (BVIM), where the difference was the counter ion (tetrafluoroborate in Wang's paper and bromide in Zhou's paper).…”

Section: Hydrogel-based Strain Sensors Based On Polyelectrolytesmentioning

confidence: 99%

Flexible and wearable strain sensors based on conductive hydrogels

Zhang

Liu

et al. 2022

Journal of Polymer Science

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In recent years, the field of flexible electronics has been thriving in academic achievements. Among them, the hydrogel-based strain sensors possess some characteristic advantages in stretchability, flexibility, stickiness and regulable modulus of elasticity, thus they are more likely to attach to human skin and the surfaces of objects. Compared to traditional sensors, hydrogels can overcome shortcomings in toughness and elasticity. Therefore, hydrogels are suitable to serve as the core materials of wearable electronics. Hydrogel-based strain sensors, as a typical kind of hydrogel flexible electronics, are in the categories of resistance sensors and capacitive sensors, which are primarily used for real-time monitoring of human motions. This review mainly introduces the up-to-date relative literatures in the field of hydrogel-based strain sensors.

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“…Furthermore, proteins in hydrogels can play a role as modifiers in achieving enhanced properties. Wang and co-workers prepared a PBH with anti-freezing, biocompatible, and tunable features, which was modified in two steps: (1) the addition of anti-freezing proteins associated with the natural fish, and (2) the employment of a chemical cross-linking method to obtain a polymeric hydrogel system [75]. Indeed, the structure of PBHs is modifiable, and polymers, owning cross-linking or modifying roles, can improve the hydrogel characteristics, since they form covalent bonds with proteins [76,77].…”

Section: Protein-based Hydrogelsmentioning

confidence: 99%

Protein-Based Hydrogels: Promising Materials for Tissue Engineering

et al. 2022

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The successful design of a hydrogel for tissue engineering requires a profound understanding of its constituents’ structural and molecular properties, as well as the proper selection of components. If the engineered processes are in line with the procedures that natural materials undergo to achieve the best network structure necessary for the formation of the hydrogel with desired properties, the failure rate of tissue engineering projects will be significantly reduced. In this review, we examine the behavior of proteins as an essential and effective component of hydrogels, and describe the factors that can enhance the protein-based hydrogels’ structure. Furthermore, we outline the fabrication route of protein-based hydrogels from protein microstructure and the selection of appropriate materials according to recent research to growth factors, crucial members of the protein family, and their delivery approaches. Finally, the unmet needs and current challenges in developing the ideal biomaterials for protein-based hydrogels are discussed, and emerging strategies in this area are highlighted.

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Protein-assisted freeze-tolerant hydrogel with switchable performance toward customizable flexible sensor

Cited by 40 publications

References 38 publications

A Strand Entangled Supramolecular PANI/PAA Hydrogel Enabled Ultra‐Stretchable Strain Sensor

A Strand Entangled Supramolecular PANI/PAA Hydrogel Enabled Ultra‐Stretchable Strain Sensor

Flexible and wearable strain sensors based on conductive hydrogels

Protein-Based Hydrogels: Promising Materials for Tissue Engineering

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