Gamma radiation induced compressive response of silicon rubber foam: Experiments and modeling

Wang, Huyi; Qiu, Yong; Hu, Wen-Jun; Chen, Yongmei

doi:10.1557/jmr.2018.480

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…Porous silicone rubber was prepared by copolymerizing polydimethylsiloxane (PDMS) and polydiphenylsiloxane (PDPS), followed by cross-linking using a vinyl monomer/vinyl-specific catalyst system. 40 To improve the impregnation of the Py monomer, the PSR surface was subjected to plasma treatment at 30 W for 5 min before construction using conductive materials. Subsequently, a thin layer of chemically oxidized PPy (cPPy) was polymerized on one side of the PSR surface.…”

Section: Preparation Of Eppy-based Piezoresistive Active Layersmentioning

confidence: 99%

Contact Piezoresistive Sensors Based on Electro-Polymerized Polypyrrole and a Regulated Conductive Pathway

Tian,

He,

et al. 2023

ACS Appl. Mater. Interfaces

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The performance of contact resistive pressure sensors heavily relies on the intrinsic characteristics of the active layers, including the mechanical surface structure, conductivity, and elastic properties. However, efficiently and simply regulating the conductivity, morphology, and modulus of the active layers has remained a challenge. In this study, we introduced electro-polymerized polypyrrole (ePPy) to design flexible contact piezoresistive sensors with tailored intrinsic properties. The customizable intrinsic property of ePPy was comprehensively illustrated on the chemical and electronic structure scale, and the impact of ePPy’s intrinsic properties on the sensing performance of the device was investigated by determining the correlation between resistivity, roughness, and device sensitivity. Due to the synergistic effects of roughness, conductivity, and elastic properties of the active layers, the flexible ePPy-based pressure sensor exhibited high sensitivity (3.19 kPa–1, 1–10 kPa, R 2 = 0.97), fast response time, good durability, and low power consumption. These advantages allowed the sensor to offer an immediate response to human motion such as finger-bending and grasping movements, demonstrating the promising potential of tailorable ePPy-based contact piezoresistive sensors for wearable electronic applications.

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Section: Preparation Of Eppy-based Piezoresistive Active Layersmentioning

confidence: 99%

Contact Piezoresistive Sensors Based on Electro-Polymerized Polypyrrole and a Regulated Conductive Pathway

Tian,

He,

et al. 2023

ACS Appl. Mater. Interfaces

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show abstract

“…Recently, research work on the aging behaviors and mechanisms of PDMS rubber exposed to radiation, temperature, and mechanical load has been reported, especially on the coupling effect of radiation and other environmental factors 7,[9][10][11] . The quantitative analysis of the chemical reaction was conducted by Fourier transform infrared spectroscopy (FTIR) 12,13 , nuclear magnetic resonance (NMR) measurement 14 , thermogravimetric analysis (TGA) 15 , and pyrolysis gas chromatography-mass spectrometry (Py-GC/MS) 16 , etc.…”

Section: Introductionmentioning

confidence: 99%

Understanding radiation-thermal aging of polydimethylsiloxane rubber through molecular dynamics simulation

2022

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The effect of radiation-thermal aging on the structure and properties of polydimethylsiloxane (PDMS) rubber at the micro-scale was investigated through molecular dynamics simulation. The aged PDMS models were constructed by incorporating the aging-induced chemical changes (hydroxyl groups, cross-linking, and scission of main chain). The simulation results show that the introduction of hydroxyl groups and cross-linking in molecular chains lower the chain mobility and the diffusion of the chains and oxygen molecules owing to the strong intermolecular interactions and long-chain structure, respectively. The introduction of short chains caused by the scission of main chains can enhance the mobility, diffusion, and flexibility of the chains and the diffusion range of oxygen molecules, resulting in the decrease in the free volume and Tg. In addition, the hardening effect of cross-linking and the softening effect of scission of main chain collectively contribute to the degradation of mechanical properties of the PDMS rubber.

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Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam

Wang

Liu

et al. 2023

Chin J Polym Sci

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Gamma radiation induced compressive response of silicon rubber foam: Experiments and modeling

Abstract: Abstract

Cited by 5 publications

References 16 publications

Contact Piezoresistive Sensors Based on Electro-Polymerized Polypyrrole and a Regulated Conductive Pathway

Contact Piezoresistive Sensors Based on Electro-Polymerized Polypyrrole and a Regulated Conductive Pathway

Understanding radiation-thermal aging of polydimethylsiloxane rubber through molecular dynamics simulation

Synergistic Effects of Gamma Irradiation, Tensile Stress and Moisture on the Radiolysis of Silicone Foam

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