Application of AgNPs/rGO Modified Nylon Fabric in Strain Sensing

Abstract The graphene oxide slurry was printed on the pre-stretched and non-pre-stretched nylon fabric by screen printing, and immersed in silver ammonia solution of different concentrations, and then reduced to obtain silver nanoparticles/reduced graphene oxide (AgNPs/rGO) modified nylon fabric with excellent conductivity. The surface morphology of the fabric was observed, and the performances of the fabric sensor that was scraped with graphene oxide slurry between the pre-stretched and non-pre-stretched states were explored. The resistance responses of the nylon fabric finished with different concentrations of silver ammonia solution under different strains (1%, 2%, 3%, 4%, 5%, 10%, 15%, 20%) were investigated. The results showed that the nylon strain sensor was more sensitive and stable when the graphene oxide slurry was scraped in the pre-stretched state, and while the silver ammonia solution concentration was 10 mg/mL, the nylon fabric had maximum sensitivity and lowest hysteresis performance.

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Carbonized wood cell chamber-reduced graphene oxide@PVA flexible conductive material for supercapacitor, strain sensing and moisture-electric generation applications

Chemical Engineering Journal ◽

10.1016/j.cej.2021.129518 ◽

2021 ◽

pp. 129518

Author(s):

Chuanyin Xiong ◽

Bingbing Li ◽

Chao Duan ◽

Lei Dai ◽

Shuangxi Nie ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Strain Sensing ◽

Conductive Material ◽

Reduced Graphene ◽

Electric Generation ◽

Carbonized Wood ◽

Cell Chamber

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Graphene Deposition on Glass Fibers by Triboelectrification

Applied Sciences ◽

10.3390/app11073123 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3123

Author(s):

Haroon Mahmood ◽

Laura Simonini ◽

Andrea Dorigato ◽

Alessandro Pegoretti

Keyword(s):

Graphene Oxide ◽

Interfacial Shear Strength ◽

Glass Fibers ◽

Deposition Process ◽

Solution Concentration ◽

Dip Coating ◽

Slight Improvement ◽

Reduced Graphene ◽

Fiber Matrix ◽

Positively Charged

In this work, a novel nanomaterial deposition technique involving the triboelectrification (TE) of glass fibers (GF) to create attractive charges on their surface was investigated. Through TE, continuous GF were positively charged thus, attracting negatively charged graphene oxide (GO) nanoparticles dispersed in a solution. The electrical charges on the glass fibers surface increased with the intensity of the TE process. The deposited GO coating was then chemically treated to obtain reduced graphene oxide (rGO) on the surface of GFs. The amount of coating obtained increased with the GO solution concentration used during the deposition process, as revealed by FESEM analysis. However, the same increment could not be noticed as a function of the intensity of the process. Both uncoated and coated GF were used to obtain single fiber microcomposites by using a bicomponent epoxy matrix. The fiber/matrix interfacial shear strength was evaluated through micro debonding tests, which revealed an increment of fiber/matrix adhesion up to 45% for rGO coated GF in comparison to the uncoated ones. A slight improvement in the electrical conductivity of rGO coated fibers through TE compared to conventional dip coating was also observed in terms of volumetric resistivity by a four-point probe setup.

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