A Method for Dispersion Degree Characterization Using Electro Conductive Mode of Atomic Force Microscopy

Bērziņa, Astrīda; Tupureina, Velta; Klemenoks, Igors; Knite, Māris

doi:10.1016/j.procs.2017.01.143

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…Figure shows the conductive channel distribution ( x and y axes) and intensity ( z axis) going through the sample, from the probe (CSG10/Pt (PtIr), NT-MDT) to the opposite aluminum electrode. When the SWCNT has formed an electroconductive channel that goes through the sample, an increase in current flow/strength is observed . A sample without the SWCNT was not measured because the measured electroconductivity is too low for the applied voltage of 0.1 V. A specific voltage of 0.1 V was selected to obtain plausible results for the whole range of SWCNT loadings.…”

Section: Resultsmentioning

confidence: 99%

“…When the SWCNT has formed an electroconductive channel that goes through the sample, an increase in current flow/strength is observed. 48 A sample without the SWCNT was not measured because the measured electroconductivity is too low for the applied voltage of 0.1 V. A specific voltage of 0.1 V was selected to obtain plausible results for the whole range of SWCNT loadings. Figure 5 shows AFM images of 0.025% (a), 0.05% (b), 0.1% (c), and 0.3% (d) samples.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

Jurinovs

Barkāne

Platnieks

et al. 2023

ACS Appl. Polym. Mater.

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The field of conductive polymer composites has been growing rapidly in recent years due to the increased demand for cutting-edge applications, such as sensors, soft robots, and other high-tech devices. Despite developing some biobased components, biobased solutions that yield working prototypes are still lacking. Herein, a method for making highly biobased, electroconductive, and 3D printable composites (electrodes) is presented. A formulation composed of acrylate-functionalized rapeseed oil (70 wt %) with the addition of a photoinitiator, reactive monomer, 1-ethyl-3-methylimidazolium acetate (ionic liquid (IL)), and single-walled carbon nanotubes (SWCNT) is reported. The proposed approach eliminates the use of solvents. Combining IL with SWCNTs resulted in highly conductive (up to 38 S m–1) biobased electrodes. The in-depth conductivity analysis was done through impedance spectroscopy, 4-point resistivity, and electroconducting atomic force microscopy. The prepared resins enable the creation of complex structures with exceptional precision and accuracy, thoroughly evaluated with optical and scanning electron microscopy. Biobased electrodes created by 3D printing have mechanical qualities like stretchability and flexibility, which make them a suitable replacement for traditional electrodes in soft robotics and flexible sensors. Furthermore, a fully 3D-printed soft-robotic actuator with performance comparable to that of commonly used petroleum-based alternatives was developed.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

Jurinovs

Barkāne

Platnieks

et al. 2023

ACS Appl. Polym. Mater.

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“…To assess the effect of surfactants and solvent on the dispersion of pigment in the coating, it is necessary at first to evaluate their effect on the size of pigment particles in the suspensions "pigment-polymer-solvent". This issue is quite complex and has various solutions: atomic force microscopy [23] of electrophoretic light scattering (ELS) [24], ultrasound research methods [25], and fluorescent and dark-field microscopy [26]. However, from a practical standpoint, the most effective method is the method of computer-optical microscopy [27].…”

Section: Computer-optical Microscopy Of the Dispersing Effect Of Surfactants In Suspensionsmentioning

confidence: 99%

Optimization of the Composition of Silicone Enamel by the Taguchi Method Using Surfactants Obtained from Oil Refining Waste

et al. 2021

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The aim of this work is to optimize the composition of a two-component silicone enamel consisting of an aluminum pigment and a polyphenylsiloxane polymer to obtain the maximum dispersion of the pigment in the coating. The following products were used as surfactants: AS-1, PEPA, and Telaz. To assess the effect of surfactants on the dispersion of the pigment, computer-optical microscopy was used. The results of the studies showed that all the studied surfactants cause an improvement in the dispersion of the pigment. According to the degree of influence on the dispersion of the pigment, surfactants can be arranged in a row: PEPA > Telaz > AS-1. When the PEPA content in the enamel is 0.25 g/dm3, a decrease in the diameter of the pigment particles by 46% (from 26 to 14 microns) is recorded, with an increase in their specific amount by 2 times (from 258 to 550 pcs). Optimal enamel compositions allow a reduction in the corrosion rate by 11 times (from 0.6 to 0.053 mm/year) and improvement to the decorative properties of coatings (roughness, gloss, etc.). The effectiveness of the AS-1 product (obtained from oil refining waste) as a dispersant additive in silicone enamel has been proven.

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The role of nanoclay on surface roughness and characteristics of epoxy polysulfide nanocomposite

Hadavand

Hosseininiasari

2019

Progress in Organic Coatings

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A Method for Dispersion Degree Characterization Using Electro Conductive Mode of Atomic Force Microscopy

Cited by 4 publications

References 10 publications

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

Three Dimensionally Printed Biobased Electrodes: Ionic Liquid and Single-Walled Carbon Nanotube Hybrids in a Vegetable Oil Matrix for Soft Robotics

Optimization of the Composition of Silicone Enamel by the Taguchi Method Using Surfactants Obtained from Oil Refining Waste

The role of nanoclay on surface roughness and characteristics of epoxy polysulfide nanocomposite

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