A conceptual model for stability and surface chemistry of oxidic soil dispersions

Leão, Tairone Paiva; Neves, Helen Vieira; Campos, Alex Fabiano Cortez; Pinheiro, Thamires Dutra; Figueiredo, Cícero Célio de

doi:10.1016/j.colsurfa.2020.125214

Cited by 2 publications

(2 citation statements)

References 48 publications

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“…The electrostatic repulsive forces are created due to the surface charge of the NP in the dispersion and its strength can be expressed by the value of zeta potential (ζ-potential). 39 As shown in Figure 7, the ζ-potential for NC dispersions prepared is negative, and it does not change significantly with increasing the concentration of the NC solution. The ζ-potential of the NC dispersions prepared from an NC concentration of 20% is about À29.6 mV (d av $ 109.93 nm), indicating that there was a strong electrostatic repulsive force between NC particles.…”

Section: Study On the Stabilization Mechanism Of Nc Aqueous Dispersionsmentioning

confidence: 80%

“…Therefore, the stability of the NC aqueous dispersions may depend mainly on the magnitude of the electrostatic repulsive forces and the Van Dar Waals attractive forces between NC NPs. The electrostatic repulsive forces are created due to the surface charge of the NP in the dispersion and its strength can be expressed by the value of zeta potential (

ζ

‐potential) 39 . As shown in Figure 7, the

ζ

‐potential for NC dispersions prepared is negative, and it does not change significantly with increasing the concentration of the NC solution.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication and mechanism study of the nitrocellulose aqueous dispersions by solvent displacement method

Fan

Zhou

Ding

et al. 2022

J of Applied Polymer Sci

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The traditional preparation methods of nitrocellulose emulsion have many problems, such as high emulsifier content, complex preparation processes, or the need for high energy‐consuming emulsification equipment. To address these issues, in this paper, the emulsifier‐free NC dispersion was successfully prepared by a simple, low‐energy solvent displacement method for the first time and the formation and stabilization mechanism of NC nanoparticles was also thoroughly investigated. The formation mechanism of the NC particles based on the “nucleation and aggregation” and the stabilization mechanism of the NC aqueous dispersions based on the electrostatic repulsion of anions were proposed and supported by experimental results. At the same time, we achieved effective control of the solid content of the NC dispersion by vacuum concentration. The obtained NC dispersion had a large range of adjustable sizes (63.82–143.43 nm), uniform size distribution (PDI < 0.2), a wide range of tunable solid content (0.5%–16%), and good stability (zeta potential < −20 mV), which has potential application in adhesives and coatings as promising candidates for traditional NC organic coatings.

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Section: Study On the Stabilization Mechanism Of Nc Aqueous Dispersionsmentioning

confidence: 80%

ζ

‐potential) 39 . As shown in Figure 7, the

ζ

‐potential for NC dispersions prepared is negative, and it does not change significantly with increasing the concentration of the NC solution.…”

Section: Resultsmentioning

confidence: 99%

Fabrication and mechanism study of the nitrocellulose aqueous dispersions by solvent displacement method

Fan

Zhou

Ding

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

Organic Matter, Agricultural Use, and Dispersion of Ferralsols for Grain Size Analysis

Leão

Wendt

Campos

et al. 2022

Communications in Soil Science and Plant Analysis

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A conceptual model for stability and surface chemistry of oxidic soil dispersions

Cited by 2 publications

References 48 publications

Fabrication and mechanism study of the nitrocellulose aqueous dispersions by solvent displacement method

Fabrication and mechanism study of the nitrocellulose aqueous dispersions by solvent displacement method

Organic Matter, Agricultural Use, and Dispersion of Ferralsols for Grain Size Analysis

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