Highly transparent, mechanical, and self-adhesive zwitterionic conductive hydrogels with polyurethane as a cross-linker for wireless strain sensors

Wang, Haibo; Li, Xiaohua; Ji, Ying; Xu, Junhuai; Ye, Zhifan; Wang, Shuang; Du, Xiaosheng

doi:10.1039/d2tb00157h

Cited by 22 publications

(26 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, there are abundant and strong hydrogen bonds, dipole-dipole interactions, ion-dipole interactions, electrostatic interactions and van der Waals interactions between the lower surface and the substrate, so when they come into contact, these reversible interactions strongly combine the ionic gel and the substrate. 30,31 For example, the super adhesion between the ionic gel and glass comes from the formation of hydrogen bonds between the -CF 3 group in the ionic liquid and the hydroxyl group, ion-dipole interactions between cations in the ionic liquid and the hydroxyl group, electrostatic interactions between cations in the ionic liquid and Si-O À , etc. (Fig.…”

Section: Adhesiveness Of the Pdma-rsf Gelmentioning

confidence: 99%

Janus-type ionic conductive gels with single-sided adhesiveness prepared by a “one-step” method for strain/pressure sensors

Xia

Liu

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Adhesiveness Of the Pdma-rsf Gelmentioning

confidence: 99%

Janus-type ionic conductive gels with single-sided adhesiveness prepared by a “one-step” method for strain/pressure sensors

Xia

Liu

et al. 2023

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…This was because KGM chains are capable of improving the toughness of ionogels. On the contrary, the overlinked structure formed by the hydrogen bonding between KGM chains and the PAMco-PAA network could lead to the over-rigidity of materials (Wang, Li, et al, 2022), which reduces flexibility. To further study the thixotropy influenced by KGM content, cyclic strain-time scanning was carried out (Fig.…”

Section: Rheological Propertiesmentioning

confidence: 99%

Transparent, Mechanically Robust, Low-temperature- tolerance, and Stretchable Ionogels Enhanced by Konjac Glucomannan toward Wireless Strain Sensors

Zheng

Jia

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Electronic skins (E-skins) are capable of detecting human health and movement, which has promising potential in the fields of human-machine interactions and artificial intelligence. However, traditional hydrogels-based E-skins suffer from poor mechanical strength, low conductivity, and instability owing to the evaporation of water. Herein, to advance the unsatisfaction of E-skins above, a semi-interpenetrating network developed by polysaccharide biomass konjac glucomannan (KGM) was introduced into covalent-crosslinked network (PAA-co-PAM) to synthesize a transparent, tough, nonvolatile, and highly stretchable ionogel with an ionic liquid (EMIM:DCA) as conductive media. This ionogel exhibited extraordinary mechanical strength (tensile strength 2.77 MPa), outstanding mechanically durability (100 stretching cycles of 250%) and elongation (elongation at break 997%). More importantly, the ionogel demonstrated remarkable anti-freezing performance (high flexibility at -20℃) and high conductivity (3.94 mS/cm) in the absence of water. Besides, after assembly from konjac glucomannan-enhanced ionogel, the sensor exhibited comprehensive strain sensing performance, which could effectively and accurately monitor the human motion via Bluetooth transmission. This strategy paves the way for a viable new generation of multifunctional biomimetic super-sensitive sensors, which have great promise for applications such as intelligent devices, health detection, and biomedical monitoring in harsh conditions.

show abstract

“…PVA-based hydrogels provide also promising platforms with a broad range of tunable mechanical properties [24,27,40,41,49,92,96,129,132,134,[142][143][144][145]. By choosing the proper method of preparation and the optimum composition, the mechanical properties of hydrogels can be modulated over a large window: tensile strength from 10 kPa to 10 MPa, toughness from 100 J/m 2 to 100 MJ/m 2 , elongation in the range 100-2100%, and elastic modulus from 1 kPa to 2.5 MPa.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Bioinspired Hydrogels as Platforms for Life-Science Applications: Challenges and Opportunities

Bercea¹

2022

Polymers

View full text Add to dashboard Cite

Hydrogels, as interconnected networks (polymer mesh; physically, chemically, or dynamic crosslinked networks) incorporating a high amount of water, present structural characteristics similar to soft natural tissue. They enable the diffusion of different molecules (ions, drugs, and grow factors) and have the ability to take over the action of external factors. Their nature provides a wide variety of raw materials and inspiration for functional soft matter obtained by complex mechanisms and hierarchical self-assembly. Over the last decade, many studies focused on developing innovative and high-performance materials, with new or improved functions, by mimicking biological structures at different length scales. Hydrogels with natural or synthetic origin can be engineered as bulk materials, micro- or nanoparticles, patches, membranes, supramolecular pathways, bio-inks, etc. The specific features of hydrogels make them suitable for a wide variety of applications, including tissue engineering scaffolds (repair/regeneration), wound healing, drug delivery carriers, bio-inks, soft robotics, sensors, actuators, catalysis, food safety, and hygiene products. This review is focused on recent advances in the field of bioinspired hydrogels that can serve as platforms for life-science applications. A brief outlook on the actual trends and future directions is also presented.

show abstract

Highly transparent, mechanical, and self-adhesive zwitterionic conductive hydrogels with polyurethane as a cross-linker for wireless strain sensors

Abstract: Zwitterionic hydrogels have attracted a myriad of research interests for their excellent flexibility and biocompatibility as flexible wearable sensors. It is desired to create E-skins that integrate high mechanical strength,...

Cited by 22 publications

References 58 publications

Janus-type ionic conductive gels with single-sided adhesiveness prepared by a “one-step” method for strain/pressure sensors

Janus-type ionic conductive gels with single-sided adhesiveness prepared by a “one-step” method for strain/pressure sensors

Transparent, Mechanically Robust, Low-temperature- tolerance, and Stretchable Ionogels Enhanced by Konjac Glucomannan toward Wireless Strain Sensors

Bioinspired Hydrogels as Platforms for Life-Science Applications: Challenges and Opportunities

Contact Info

Product

Resources

About