Application of ionic liquids in rubber elastomers: Perspectives and challenges

Sivasankarapillai, Vishnu Sankar; Sundararajan, Atchaya; Easwaran, Easwaran Chonnur; Pourmadadi, Mehrab; Aslani, Ali; Dhanusuraman, Ragupathy; Rahdar, Abbas; Kyzas, George Z.

doi:10.1016/j.molliq.2023.121846

Cited by 14 publications

(3 citation statements)

References 50 publications

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“…However, these conductive fillers are prone to uneven dispersion in zwitterionic hydrogels, leading to reduced transparency. To improve the conductivity and stability of zwitterionic hydrogels while minimizing the compromise of their other merits, effective and feasible methods include increasing the ion concentration inside the zwitterionic hydrogel, introducing a conductive molecular layer at the specific interface of the zwitterionic hydrogel [192] , and incorporating ionic liquids (ILs) [193] are effective and feasible.…”

Section: Enhance the Conductivity Of Zwitterionic Hydrogelsmentioning

confidence: 99%

Zwitterionic hydrogels and their biomedical applications: a review

Li,

Zheng,

Zhang

et al. 2024

Chem Synth

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The coexistence of anions and cations in zwitterionic hydrogels results in electrostatic interactions between the polymer chains. This structure endows zwitterionic hydrogels with higher ion sensitivity and promising properties, such as anti-polyelectrolyte and thermosensitive effects. Hydrophilic groups on the molecular backbone give zwitterionic hydrogels good biocompatibility, and they effectively resist the non-specific adsorption of proteins. The abundant functional groups on the molecular skeleton also facilitate the chemical modification of zwitterionic hydrogels. In recent years, these excellent properties have made zwitterionic hydrogels broadly interesting and they have been heavily studied for medical applications. A comprehensive review will help researchers have a deeper understanding of zwitterionic hydrogels and their potential applications. In this review, the types, functional characteristics, and applications in the biomedicine of zwitterionic hydrogels are summarized in detail. In addition, the challenges and opportunities for using zwitterionic hydrogels for biomedical applications are discussed.

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Section: Enhance the Conductivity Of Zwitterionic Hydrogelsmentioning

confidence: 99%

Zwitterionic hydrogels and their biomedical applications: a review

Li,

Zheng,

Zhang

et al. 2024

Chem Synth

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“…In contrast, ionogels with solvent components being ionic liquids (ILs) exhibit extraordinary antifreezing capability and thermal stability. − These properties render ionogels a promising alternative to hydrogel for the fabrication of flexible ionotronics. − However, most reported ionogels present relatively poor mechanical properties, − such as fracture strength <1 MPa, Young’s modulus <0.1 MPa, and fracture energy <1000 J/m 2 . To date, various strategies including introduction of energy dissipation structure and nanocomposites have been proposed to improve ionogels’ mechanical performances. ,− Among them, the energy dissipation mechanism (sacrificial bond theory) is considered as an effective way to produce toughness and has been well established in hydrogels. , Referring to the hydrogel system, the mechanical strength and toughness of ionogels are largely improved by designing and constructing an energy dissipation structure.…”

Section: Introductionmentioning

confidence: 99%

Bicontinuous Ionogel Electrolyte with Conductive Nanochannels for Flexible Supercapacitors

Li,

Feng,

Chen

et al. 2024

ACS Appl. Mater. Interfaces

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Ionogels with excellent mechanical performance and conductivity have been considered as ideal candidates for flexible ionotronics. However, current ionogels suffer from the well-known trade-off between mechanical strength and conductivity. Herein, we construct an ionogel with bicontinuous phase structures, a polymer-rich phase, and a solvent-rich phase. The synergy of the polymer-rich phase as an energy dissipation mechanism and the solvent-rich phase as a conductive nanochannel enables the resultant bicontinuous ionogel to show comprehensive properties, a tensile strength of 4.2 MPa, a toughness of 14.4 MJ/m 3 , a conductivity of 4.3 mS/cm, excellent self-healing capability, and reprocessability. Benefiting from the remarkable mechanical performance and high conductivity, the integrated supercapacitor achieves a high specific capacitance of 118 mF/cm 2 (at a current density of 0.2 mA/cm 2 ) and a capacitance retention of up to 90% (1000 charge−discharge cycles). More significantly, the resultant supercapacitor retains outstanding electrochemical performance even after being subjected to various deformations and even under harsh conditions. This study provides a reliable strategy for developing a high-performance ionogel electrolyte and broadens its application in flexible ionotronics.

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“…This can be attributed to the large change in the lattice spacing of loosely packed colloidal crystals caused by the volume change of the gel. Recently, colloidal photonic crystals immobilized in elastic polymers, i.e., elastomers [ 15 , 16 , 17 ], have been developed as facilely tunable colloidal photonic crystals [ 18 , 19 , 20 ]. In contrast to gel-immobilized colloidal photonic crystals, they do not contain swelling solvents and exhibit excellent elasticity and strength; hence, the stopband wavelength can be easily altered in ambient atmosphere by applying mechanical stress.…”

Section: Introductionmentioning

confidence: 99%

Practical Preparation of Elastomer-Immobilized Nonclose-Packed Colloidal Photonic Crystal Films with Various Uniform Colors

et al. 2023

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Colloidal photonic crystals, which are three-dimensional periodic structures of monodisperse submicron-sized particles, are expected to be suitable for novel photonic applications and color materials. In particular, nonclose-packed colloidal photonic crystals immobilized in elastomers exhibit significant potential for use in tunable photonic applications and strain sensors that detect strain based on color change. This paper reports a practical method for preparing elastomer-immobilized nonclose-packed colloidal photonic crystal films with various uniform Bragg reflection colors using one kind of gel-immobilized nonclose-packed colloidal photonic crystal film. The degree of swelling was controlled by the mixing ratio of the precursor solutions, which used a mixture of solutions with high and low affinities for the gel film as the swelling solvent. This facilitated color tuning over a wide range, enabling the facile preparation of elastomer-immobilized nonclose-packed colloidal photonic crystal films with various uniform colors via subsequent photopolymerization. The present preparation method can contribute to the development of practical applications of elastomer-immobilized tunable colloidal photonic crystals and sensors.

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Application of ionic liquids in rubber elastomers: Perspectives and challenges

Cited by 14 publications

References 50 publications

Zwitterionic hydrogels and their biomedical applications: a review

Zwitterionic hydrogels and their biomedical applications: a review

Bicontinuous Ionogel Electrolyte with Conductive Nanochannels for Flexible Supercapacitors

Practical Preparation of Elastomer-Immobilized Nonclose-Packed Colloidal Photonic Crystal Films with Various Uniform Colors

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