Ethyl cellulose nanoparticles as stabilizers for Pickering emulsions

Kibbelaar, Heleen V.M.; Dekker, Riande I.; Morcy, Azeza; Kegel, Willem K.; Velikov, Krassimir P.; Bonn, Daniel

doi:10.1016/j.colsurfa.2022.128512

Cited by 15 publications

(11 citation statements)

References 54 publications

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“…These measurements show that the presence of free ethyl cellulose in either the oil or water phase does not give an additional decrease in the interfacial tension compared to the oil/water system without any ethyl cellulose (nanoparticles). These results can also be found in Kibbelaar et al 36 Therefore, we can rule out the possibility that ethyl cellulose molecules go to the interface and thereby decrease the interfacial tension. We have tried to verify this further by centrifuging the particles and testing the interfacial tension between the supernatant and soybean oil.…”

Section: Interfacial Tension Of Soybean Oil and Water With Ecnpssupporting

confidence: 85%

“…35 Additionally, previous measurements estimated the contact angle of the ECNPs to be 62. For details on the particle, emulsion drop size distribution and contact angle determination, see the work by Kibbelaar et al 36…”

Section: Methodsmentioning

confidence: 99%

“…The preparation of ECNP-stabilised emulsions is described by Kibbelaar et al 36 In short, the emulsification is performed with an IKA T25 digital Ultra-Turrax homogenizer. The soybean oil is slowly added to the aqueous phase containing 2 wt% of particles, while mixing at 2 krpm.…”

Section: Microscopy Study Of Emulsion Stabilitymentioning

confidence: 99%

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Is there a difference between surfactant-stabilised and Pickering emulsions?

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Section: Interfacial Tension Of Soybean Oil and Water With Ecnpssupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%

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Is there a difference between surfactant-stabilised and Pickering emulsions?

et al. 2023

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“…Meanwhile, suitable molecular vibration modes endow EC with strong IR emission in the atmospheric transmission window. Moreover, EC can improve the dispersion stability of the BaSO 4 -based slurry and acts as a binder to bond BaSO 4 NPs, , which is significant to the uniformity and mechanical strength of the coating after drying.…”

Section: Resultsmentioning

confidence: 99%

Green-Manufactured and Recyclable Coatings for Subambient Daytime Radiative Cooling

Liu

Zhou

et al. 2022

ACS Appl. Mater. Interfaces

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Passive daytime radiative cooling, which reflects sunlight and simultaneously emits heat into space to cool surfaces without energy input, is a promising strategy for energy conservation. Integrating radiative cooling with building systems can tremendously alleviate electrical cooling, but manufacturing high-efficient and eco-friendly coatings remains an urgent and challenging task. Here, we present a simple and scale-up strategy for fabricating ultrawhite coatings consisting of porous ethyl cellulose matrix−random BaSO 4 nanoparticles utilizing green solvents. With the synergistic effect of the ideal intrinsic properties of the materials and the strong Mie scattering of the porous structure, the ultrawhite coating possesses a record solar reflectance of 98.6% and a thermal emittance of 98.1%, resulting in a subambient temperature drop of over 2.5 °C under a solar intensity of ∼920 W m −2 . Better yet, our coatings can be conveniently brushed, rolled, or sprayed onto various types of substrates, with excellent durability, self-cleaning, and cost-effectiveness, paving an attractive and viable pathway for large-scale applications in practical buildings.

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“…Our proposal involves nanocellulose to stabilize a resembling system, although with less CHCl 3 and much less acid. Negatively charged cellulose nanofibers (CNFs) can simultaneously fulfill the roles of rheology modifier and Pickering stabilizer, which are generally closely related. , …”

Section: Introductionmentioning

confidence: 99%

Durable Nanocellulose-Stabilized Emulsions of Dithizone/Chloroform in Water for Hg²⁺ Detection: A Novel Approach for a Classical Problem

Aguado

Mazega

Fiol

et al. 2023

ACS Appl. Mater. Interfaces

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The use of dithizone (DTZ) for colorimetric heavymetal detection is approximately one century old. However, its pending stability issues and the need for simple indicators justify further research. Using cellulose nanofibers, we attained DTZcontaining emulsions with high stability. These emulsions had water (at least 95 wt %) and acetic acid (1−8 mL/L) conforming the continuous phase, while dispersed droplets of diameter <1 μm contained chloroform-solvated DTZ (3 wt %). The solvation cluster was computed by molecular dynamics simulations, suggesting that chloroform slightly reduces the dihedral angle between the two sides of the thiocarbazone chain. Nanocellulose concentrations over 0.2 wt % sufficed to obtain macroscopically homogeneous mixtures with no phase separation. Furthermore, the rate of degradation of DTZ in the nanocellulose-stabilized emulsion did not differ significantly from a DTZ/chloroform solution, outperforming DTZ/toluene and DTZ/acetonitrile. Not only is the emulsion readily and immediately responsive to mercury(II), but it also decreases interferences from other ions and from natural samples. Unexpectedly, neither lead(II) nor cadmium(II) triggered a visual response at trace concentrations. The limit of detection of these emulsions is 15 μM or 3 mg/L, exceeding WHO limits for mercury(II) in drinking water, but they could be effective at raising alarms.

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Ethyl cellulose nanoparticles as stabilizers for Pickering emulsions

Cited by 15 publications

References 54 publications

Is there a difference between surfactant-stabilised and Pickering emulsions?

Is there a difference between surfactant-stabilised and Pickering emulsions?

Green-Manufactured and Recyclable Coatings for Subambient Daytime Radiative Cooling

Durable Nanocellulose-Stabilized Emulsions of Dithizone/Chloroform in Water for Hg²⁺ Detection: A Novel Approach for a Classical Problem

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Ethyl cellulose nanoparticles as stabilizers for Pickering emulsions

Cited by 15 publications

References 54 publications

Is there a difference between surfactant-stabilised and Pickering emulsions?

Is there a difference between surfactant-stabilised and Pickering emulsions?

Green-Manufactured and Recyclable Coatings for Subambient Daytime Radiative Cooling

Durable Nanocellulose-Stabilized Emulsions of Dithizone/Chloroform in Water for Hg2+ Detection: A Novel Approach for a Classical Problem

Contact Info

Product

Resources

About

Durable Nanocellulose-Stabilized Emulsions of Dithizone/Chloroform in Water for Hg²⁺ Detection: A Novel Approach for a Classical Problem