Ionic conductive gels based on deep eutectic solvents

Liu, Cuiping; Qi, Jinfan; He, Bin; Zhang, Huan; Ju, Jie; Yao, Xi

doi:10.1080/19475411.2021.1972053

Cited by 14 publications

(13 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As expected, BioeGel0% presented a predictable conductivity of 72 mS m –1 according to Manning’s theory, considering that the eutectic mixture and collagen dielectric constants are the main ones responsible for ionic conductivity. Furthermore, it was found that similar ionic gels exhibited conductivities in the same order of magnitude as that of BioeGels . Interestingly, the k values of BioeGels loaded with TA@CNC yielded conductivities higher than that of BioeGel0%.…”

Section: Resultsmentioning

confidence: 89%

“…Furthermore, it was found that similar ionic gels exhibited conductivities in the same order of magnitude as that of BioeGels. 57 Interestingly, the k values of BioeGels loaded with TA@CNC yielded conductivities higher than that of BioeGel0%. In this sense, previous studies suggested that the addition of CNC as well as a crosslinker such as TA can enhance the ionic conductivity.…”

Section: ■ Results and Discussionmentioning

confidence: 94%

See 1 more Smart Citation

Natural, Biocompatible, and 3D-Printable Gelatin Eutectogels Reinforced with Tannic Acid-Coated Cellulose Nanocrystals for Sensitive Strain Sensors

Mercadal

Romero

Montesinos

et al. 2023

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

Ionic gels from eutectic mixtures are attracting extensive interest in bioelectronics owing to their nonvolatile nature, low cost, and inherently high ionic conductivity. Biodegradable electronics made of biopolymers envisage a promising future in this field, but unfortunately, they often feature poor mechanics. Herein, we explored tannic acid-decorated cellulose nanocrystals (TA@CNC) as dynamic nanofillers of biocompatible eutectogels based on gelatin and a eutectic mixture composed of choline chloride and ethylene glycol (ethaline). Small concentrations of TA@CNC (up to 1–2 wt %) allow increasing by two-fold the strength (30 kPa) and stretchability (180%) of the eutectogels while improving their ionic conductivity (105 mS·m–1). The reversible physical network of the protein and multiple hydrogen bonding interactions with tannic acid endow these eutectogels with good self-adhesiveness, suitable gel-to-sol transition for 3D printing, and recyclability. We further used the cellulose nanocomposite eutectogels as skin-conformal electrodes for monitoring different motions of the human body with excellent sensitivity in the open air thanks to the low volatility of ethaline. All in all, these results demonstrate a facile strategy to boost the properties of biopolymer eutectogels using inexpensive and renewable raw materials as rigid nanoreinforcers.

show abstract

Section: Resultsmentioning

confidence: 89%

Section: ■ Results and Discussionmentioning

confidence: 94%

Natural, Biocompatible, and 3D-Printable Gelatin Eutectogels Reinforced with Tannic Acid-Coated Cellulose Nanocrystals for Sensitive Strain Sensors

Mercadal

Romero

Montesinos

et al. 2023

ACS Appl. Electron. Mater.

View full text Add to dashboard Cite

show abstract

“…The above reports have demonstrated the anti-freeze properties of conventional hydrogels. Although there are certain research results and experimental methods have been promoted [66] Copyright 2021, The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.…”

Section: Other Strategies To Prepare Antifreezing Hydrogelsmentioning

confidence: 99%

mentioning

confidence: 99%

Environmentally Adaptive Polymer Hydrogels: Maintaining Wet‐Soft Features in Extreme Conditions

Lei

Chen

Guo

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Hydrogels have been widely explored to adapt to different application circumstances. As typical wet‐soft materials, the high‐water content of hydrogels is beneficial to their wide biomedical applications. Moreover, hydrogels have been displaying considerable application potential in some high‐tech areas, like brain‐computer interface, intelligent actuator, flexible sensor, etc. However, traditional hydrogel is susceptive to freezing below zero, dehydration, performance swelling‐induced deformation, and suffers from mechanical damage in extremely mechanical environments, which result in the loss of wet‐soft peculiarities (e.g., flexibility, structure integrity, transparency), greatly limiting their applications. Therefore, reducing the freezing point, improving the dehydration/solution resistance, and designing mechanical adaptability are effective strategies to endow hydrogels with the extreme environmental adaptability, thus broadening their application fields. This review systematically summarizes research advances of environmentally adaptive hydrogels (EAHs), comprising anti‐freezing, dehydration‐resistant, acid/base/swelling deformation‐resistant, and mechanical environment adaptive hydrogels (MEAHs). Firstly, fabrication methods are presented, including the deep eutectic solvent/ionic liquid substituent, the addition of salts, organogel, polymer network modification, and double network (DN) complex/nanocomposite strategy, etc. Meanwhile, the features of different approaches are overviewed. The mechanisms, properties, and applications (e.g., intelligent actuator, wound dressing, flexible sensor) of EAHs are demonstrated. Finally, the issues and future perspectives for EAHs’ researches are demonstrated.

show abstract

“…Therefore, DES based ionic gels had been greatly favored. Liu et al 18 prepared ionic gels with good environmental stability (anti‐drying) and chemical stability (anti‐corrosion) by using DES (composed of propylene glycol and various chloride salts) as solvent. However, the maximum tensile strength and the tensile strain was only 12.23 kPa and 127%, respectively.…”

Section: Introductionmentioning

confidence: 99%

A stretchable, compressible and anti‐freezing ionic gel based on a natural deep eutectic solvent applied as a strain sensor

Yan

Lian

2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Glycerin (Gly), a common by-product in petrochemical industry, is used as hydrogen bond donor. Green organic choline chloride (ChCl) as hydrogen bond acceptor. Natural deep eutectic solvent (NDES) can be prepared with Gly and ChCl. Subsequently, a starch/NDES ionic gel is prepared by in situ free radical polymerization of acrylamide monomer in NDES with starch as the reinforcement. The effects of amylose content in starch and starch addition amount on mechanical properties of ionic gel are analyzed. The results show that starch could be partially dissolved and dispersed in NDES. Compared with the tensile strength of pure NDES gel (about 15 kPa), the tensile strength of starch/NDES ionic gel is increased by 6 times to 90 kPa. It shows good selfrecovery performance after 20 compression cycles. Starch/NDES ionic gel has good thermal stability and frost resistance. In addition, CS4 starch/NDES ionic gel has the highest conductivity. At the same time, starch/NDES ionic gel has been successfully applied to monitor grasping motion of hand, which has the potential of strain sensor. It provides a new green method for the design of electronic products such as electronic skin.

show abstract

Ionic conductive gels based on deep eutectic solvents

Cited by 14 publications

References 41 publications

Natural, Biocompatible, and 3D-Printable Gelatin Eutectogels Reinforced with Tannic Acid-Coated Cellulose Nanocrystals for Sensitive Strain Sensors

Natural, Biocompatible, and 3D-Printable Gelatin Eutectogels Reinforced with Tannic Acid-Coated Cellulose Nanocrystals for Sensitive Strain Sensors

Environmentally Adaptive Polymer Hydrogels: Maintaining Wet‐Soft Features in Extreme Conditions

A stretchable, compressible and anti‐freezing ionic gel based on a natural deep eutectic solvent applied as a strain sensor

Contact Info

Product

Resources

About