Synthesis of gallic acid-grafted epoxidized natural rubber and its role in self-healable flexible temperature sensors

Guchait, Aparna; Sharma, Simran; Chattopadhyay, Santanu; Mondal, Titash

doi:10.1039/d3sm01367g

Cited by 5 publications

(1 citation statement)

References 60 publications

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“…Among various applications, sensor technology is getting antecedent due to its capability to obtain a wide plethora of information at ease upon integration of different electronic devices. The construction of the sensor leverages traditional ceramic-based materials; however, recently, there has been a potential impetus toward developing the sensors by using varying nanomaterials, including graphene, carbon nanomaterials, MXenes, etc. − This has widened the application purview to a greater extent. As a result, there has been a tremendous rush in fabricating sensors for nonconventional applications using nanomaterials like graphene, carbon nanotubes, MXenes, etc.…”

Section: Introductionmentioning

confidence: 99%

Advancement of 2D Material-Based Moisture-Enabled Nanogenerators

Pramanik,

Sengupta,

Sharma

et al. 2024

ACS Appl. Electron. Mater.

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Section: Introductionmentioning

confidence: 99%

Advancement of 2D Material-Based Moisture-Enabled Nanogenerators

Pramanik,

Sengupta,

Sharma

et al. 2024

ACS Appl. Electron. Mater.

Self Cite

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Polymers with one free gallic acid per monomer unit. Controlled synthesis and intrinsic antioxidant/antibacterial properties

Khalil,

Moya Lopez,

Pérez-Martínez

et al. 2024

European Polymer Journal

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Hysteresis-Free Temperature Sensing with Printable Electronic Skins Made of Liquid Polyisoprene/CNTs

Selvan T,

Haridas C P,

Karmakar

et al. 2024

ACS Appl. Mater. Interfaces

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Developing an electronic skin (e-skin) is becoming popular due to its capability to mimic human skin’s ability to detect various stimuli. Mostly, such skins are tactile-based sensors. However, the exploration of nontactile-based sensing capability in the e-skin is still in a nascent stage. Herein, we report an approach toward developing electrical hysteresis- and cross-interference-free nontactile e-skin using liquid polyisoprene with an ultralow concentration of multiwalled carbon nanotubes (ϕ = 0.006 volume fraction) by leveraging the stencil printing technique. The impact of cross-linking the samples was studied. Uncross-linked samples demonstrated higher electrical conductivity than the cross-linked samples. A coarse-grained phenomenological model with molecular dynamics simulation was utilized to investigate filler network formation and percolation that dictate the conductivity of uncross-linked and cross-linked samples. Simulation studies supported the fidelity of the experimental findings. The uncross-linked e-skin demonstrated a higher temperature sensitivity (−1.103%/°C) than the cross-linked e-skin (−0.320%/°C) in the thermal conduction mode. Despite the superior sensitivity of the uncross-linked e-skin, the cross-linked systems demonstrated superior cyclic stability (35 thermal cycles), ensuring reliable sensor readings over extended usage. Judicious choice of encapsulant warranted the cross-linked e-skin sensor to nullify the impact of moisture on signal output, thereby providing cross-interference-free results. The optimized e-skin sample retained a similar thermal sensitivity even when used in the nontactile mode. From the application purview, the utility of the developed sensor was tested successfully for nontactile sensing of human body temperature. Additionally, the sensor was utilized to determine the respiratory profile by integrating the developed sensor into a wearable mask. This study advances nontactile e-skin-based sensing technology and opens new avenues for creating wearable and IoT devices for healthcare and human–machine interactions.

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Synthesis of gallic acid-grafted epoxidized natural rubber and its role in self-healable flexible temperature sensors

Abstract: Developing a flexible temperature sensor with appreciable sensitivity is critical for advancing research related to flexible electronics.

Cited by 5 publications

References 60 publications

Advancement of 2D Material-Based Moisture-Enabled Nanogenerators

Advancement of 2D Material-Based Moisture-Enabled Nanogenerators

Polymers with one free gallic acid per monomer unit. Controlled synthesis and intrinsic antioxidant/antibacterial properties

Hysteresis-Free Temperature Sensing with Printable Electronic Skins Made of Liquid Polyisoprene/CNTs

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