High strength, anti-freezing and strain sensing carboxymethyl cellulose-based organohydrogel

Cheng, Ya; Ren, Xiuyan; Gao, Guanghui; Duan, Lijie

doi:10.1016/j.carbpol.2019.115051

Cited by 79 publications

(33 citation statements)

References 52 publications

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“…The incorporation of CMC in hydrogels can stabilize insoluble compositions making the hydrogels uniform and water absorbent for humidity sensor and actuator applications. , For example, Barras et al printed conductive flexible CMC-based hydrogel composites on a paper substrate for the application of humidity sensing . The mechanical strength of CMC-based hydrogels for use as strain sensors had been reported to be improved significantly by the introduction of cations as a cross-linking agent …”

Section: Common Polymers For Hydrogel Sensor Applicationsmentioning

confidence: 99%

“…99 The mechanical strength of CMC-based hydrogels for use as strain sensors had been reported to be improved significantly by the introduction of cations as a cross-linking agent. 100 Starch is a major natural polysaccharide, consisting of several monosaccharides or glucose molecules joined with α-D-(1−4) or α-D-(1−6) linkages, which has a large number of hydroxyl groups to be utilized for hydrogel preparation or chemical modification. 101 It has excellent water swelling capacity that has been used in dye sorption, 102−104 heavy-metal capture, 105−107 and water and fertilizer monitoring in agriculture.…”

Section: Common Polymers For Hydrogel Sensor Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrogel-Based Sensor Networks: Compositions, Properties, and Applications—A Review

Sun

Agate

Salem

et al. 2020

ACS Appl. Bio Mater.

177

109

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Hydrogels are three-dimensional porous polymeric networks prepared by physical or chemical cross-linking of hydrophilic molecules, which can be made into smart materials through judicious chemical modifications to recognize external stimuli; more specifically, this can be accomplished by the integration with stimuli-responsive polymers or sensing molecules that has drawn considerable attention in their possible roles as sensors and diagnostic tools. They can be tailored in different structures and integrated into systems, depending on their chemical and physical structure, sensitivity to the external stimuli and biocompatibility. A panoramic overview of the sensing advances in the field of hydrogels over the past several decades focusing on a variety protocols of hydrogel preparations is provided, with a major focus on natural polymers. The modifications of hydrogel composites by incorporating inorganic nanoparticles and organic polymeric compounds for sensor applications and their mechanisms are also discussed.

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Section: Common Polymers For Hydrogel Sensor Applicationsmentioning

confidence: 99%

Section: Common Polymers For Hydrogel Sensor Applicationsmentioning

confidence: 99%

Hydrogel-Based Sensor Networks: Compositions, Properties, and Applications—A Review

Sun

Agate

Salem

et al. 2020

ACS Appl. Bio Mater.

177

109

View full text Add to dashboard Cite

show abstract

“…Abundant conductive ions were formed in the hydrogel network by introducing LiCl solution, which improved the conductivity of the hydrogel. In addition, Wu et al [235] prepared a KCL/PAM/carrageenan self-healing hydrogel. The ethylene glycol/glycerol binary solvent introduced into the hydrogel formed a strong hydrogen bond with water molecules so that the hydrogel had excellent self-healing properties.…”

Section: Ionic Self-healing Hydrogelmentioning

confidence: 99%

Self-Healing Mechanism and Conductivity of the Hydrogel Flexible Sensors: A Review

Zhang

Wang

Wei

et al. 2021

Gels

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Sensors are devices that can capture changes in environmental parameters and convert them into electrical signals to output, which are widely used in all aspects of life. Flexible sensors, sensors made of flexible materials, not only overcome the limitations of the environment on detection devices but also expand the application of sensors in human health and biomedicine. Conductivity and flexibility are the most important parameters for flexible sensors, and hydrogels are currently considered to be an ideal matrix material due to their excellent flexibility and biocompatibility. In particular, compared with flexible sensors based on elastomers with a high modulus, the hydrogel sensor has better stretchability and can be tightly attached to the surface of objects. However, for hydrogel sensors, a poor mechanical lifetime is always an issue. To address this challenge, a self-healing hydrogel has been proposed. Currently, a large number of studies on the self-healing property have been performed, and numerous exciting results have been obtained, but there are few detailed reviews focusing on the self-healing mechanism and conductivity of hydrogel flexible sensors. This paper presents an overview of self-healing hydrogel flexible sensors, focusing on their self-healing mechanism and conductivity. Moreover, the advantages and disadvantages of different types of sensors have been summarized and discussed. Finally, the key issues and challenges for self-healing flexible sensors are also identified and discussed along with recommendations for the future.

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“…24 Cheng and co-workers reported an antifreezing carboxymethyl cellulose-based organohydrogel by the introduction of ethylene glycol to prevent the freezing of water. 25 In particular, inorganic salts were also introduced to fabricate antifreeze hydrogels because of nontoxic and low cost. 26 Tong and co-workers reported the ultrastretchable conductive cellulose hydrogel with high strain sensitivity and frost resistance, which was formed in a saturated NaCl solution.…”

Section: Introductionmentioning

confidence: 99%

Ultrastretchable, Tough, Antifreezing, and Conductive Cellulose Hydrogel for Wearable Strain Sensor

Chen

Zhao

Wei

et al. 2020

ACS Appl. Mater. Interfaces

119

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Conductive hydrogels have shown great potential in the field of flexible strain sensors. However, their application is greatly limited due to the low conductivity and poor mechanical properties at subzero temperatures. Herein, an ultrastretchable, tough, antifreezing, and conductive cellulose hydrogel was fabricated by grafting acrylonitrile and acrylamide copolymers onto the cellulose chains in the presence of zinc chloride using ceric ammonium nitrate as the initiator. The resulting hydrogel exhibited ultrastretchability (1730%), excellent tensile strength (160 kPa), high elasticity (90%), good toughness (1074.7 kJ/m 3 ), and fatigue resistance property due to the existence of dipole−dipole and multiple hydrogen-bonding interactions on the hydrogel network. In addition, the introduced zinc chloride endowed the cellulose-based hydrogel with remarkable electric conductivity (1.54 S/m) and excellent antifreezing performance (−33 °C). Finally, the hydrogel showed high sensitivity and stability to monitor human activities. In summary, this work presented a facile strategy to construct conductive hydrogel with excellent antifreezing and mechanical properties simultaneously, which showed great potential for wearable strain sensors.

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High strength, anti-freezing and strain sensing carboxymethyl cellulose-based organohydrogel

Cited by 79 publications

References 52 publications

Hydrogel-Based Sensor Networks: Compositions, Properties, and Applications—A Review

Hydrogel-Based Sensor Networks: Compositions, Properties, and Applications—A Review

Self-Healing Mechanism and Conductivity of the Hydrogel Flexible Sensors: A Review

Ultrastretchable, Tough, Antifreezing, and Conductive Cellulose Hydrogel for Wearable Strain Sensor

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