Anti-swellable cellulose hydrogel for underwater sensing

Lan, Zhuyue; Wang, Yuanyuan; Hu, Ke; Shi, Shitao; Meng, Qingyu; Zhang, Jiayi; Shen, Xiaoping

doi:10.1016/j.carbpol.2023.120541

Cited by 33 publications

(15 citation statements)

References 47 publications

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“…With the increase in water depth (1 cm), the resistance showed f) The swelling-time diagrams of various reported anti-swelling hydrogels. [45][46][47][48][49][50][51][52] g) Optical pictures of PDMS/Triton X-100 immersed in water for a long time and water contact angle pictures before and after immersion. a clear downward trend.…”

Section: Underwater Sensing Performance Measurementsmentioning

confidence: 99%

“…b) Swelling ratio of hydrogels with different components and c) corresponding local enlarged images. Comparison of swelling properties of common hydrophilic hydrogel d) before and after packaging and e) corresponding local enlarged images.f) The swelling-time diagrams of various reported anti-swelling hydrogels [45][46][47][48][49][50][51][52]. g) Optical pictures of PDMS/Triton X-100 immersed in water for a long time and water contact angle pictures before and after immersion.…”

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confidence: 99%

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Flexible MXene‐Based Hydrogel Enables Wearable Human–Computer Interaction for Intelligent Underwater Communication and Sensing Rescue

Zang

Chen

et al. 2023

Adv Funct Materials

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Conductive hydrogels have recently attracted extensive attention in the field of smart wearable electronics. Despite the current versatility of conductive hydrogels, the balance between mechanical properties (tensile properties, strength, and toughness) and electrical properties (electrical conductivity, sensitivity, and stability) still faces great challenges. Herein, a simplified method for constructing hydrophobic association hydrogels with excellent mechanical and electrical properties is proposed. The prepared conductive hydrogels exhibit high tensile properties (≈1224%), high linearity in the whole‐strain–range (R2 = 0.999), and a wide strain sensing range (2700%). The conductive hydrogel can realize more than 1000 cycles of sensing under 500% tensile strain. As an application demonstration, an underwater communication device is assembled in combination with polydimethylsiloxane/Triton X‐100 film coating, which successfully transmits underwater signals and provides warning of potential hazards. This study provides a new research method for developing underwater equipment with excellent mechanical properties and sensing properties.

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Section: Underwater Sensing Performance Measurementsmentioning

confidence: 99%

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confidence: 99%

Flexible MXene‐Based Hydrogel Enables Wearable Human–Computer Interaction for Intelligent Underwater Communication and Sensing Rescue

Zang

Chen

et al. 2023

Adv Funct Materials

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“…The high-crystallinity cellulose skeleton makes the prepared hydrogels have high stability and can resist the erosion of seawater. [44]…”

Section: Alkali/urea and Naoh/thiourea Systemmentioning

confidence: 99%

“…used NaOH/urea to dissolve microcrystalline cellulose (MCC) and regenerated it in ethanol to obtain high‐crystallinity cellulose, and then combined it with ionic conductive polyelectrolyte to get ionic conductive composite hydrogel through the freeze‐thaw cycle. The high‐crystallinity cellulose skeleton makes the prepared hydrogels have high stability and can resist the erosion of seawater [44] …”

Section: Dissolution Of Cellulosementioning

confidence: 99%

Cellulose Dissolution, Modification, and the Derived Hydrogel: A Review

Wu,

Li,

Zhang

et al. 2023

ChemSusChem

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The development of cellulose‐based hydrogel has occupied a pivotal position in almost all walks of life. However, the native cellulose can not be directly used for preparing hydrogel due to the complex non‐covalent interactions. Some literature has discussed the dissolution and modification of cellulose but has yet to address the influence of the pretreatment on the as‐prepared hydrogels. Firstly, the "touching" of cellulose by derivative and non‐derivative solvents was introduced, viz., the dissolution of cellulose. Secondly, the "conversion" of functional groups on the cellulose surface by special routes, viz., the modification of cellulose. The above‐mentioned two parts were intended to explain the changes in physicochemical properties of cellulose by these routes and their influences on the subsequent hydrogel preparation. Finally, we summarized the “reinforcement” of cellulose‐based hydrogels by physical and chemical techniques, viz., improving the mechanical properties of cellulose‐based hydrogels and the changes in the multi‐level structure of the interior of cellulose‐based hydrogels.

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“…17,18 However, hydrogel mechanosensors still face signicant limitations, such as relatively low sensitivity (generally <2.33 kPa −1 ), 19,20 susceptibility to water evaporation when used in air, and water absorption when used underwater. 21,22 To enhance the sensitivity of hydrogelbased capacitive mechanosensors, researchers have extensively investigated the strategy of micropattern construction on the surface of hydrogel that acts as either electrode 23 or dielectric layer 24 of the device. Moreover, uniquely micropatterned capacitive sensors have demonstrated improved performance indices, including sensitivity, low limit of detection (LOD), and short response time, compared to gels with ordinary homogeneous structures.…”

Section: Introductionmentioning

confidence: 99%