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Advances in Liquid Systems: Aerosols, Foams, and Emulsions
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Advances in Liquid Systems: Aerosols, Foams, and Emulsions

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Environmental Aspects in Colloid and Interface Science".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 6519

Special Issue Editors

Dr. Miroslav Kohl

E-Mail Website
Guest Editor
Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice, 53210 Pardubice, Czech Republic
Interests: protective organic and inorganic coatings; hybrid coatings; metals, organic and inorganic pigments; conductive polymers; pigments of semiconductor nature; anticorrosive pigments; multiscale-electrochemical measurements; cyclic corrosion tests
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Andréa Kalendová

E-Mail Website
Guest Editor
Institute of Chemistry and Technology of Macromolecular Materials, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
Interests: protective organic and inorganic coatings; conductive polymers; anticorrosive pigments; thermal stable coatings and pigments; fillers for coatings; antimicrobial polymer coatings; water based coatings
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, significant advances and applications have been observed in the science and research of colloidal systems, particularly aerosols, foams, and emulsions. It is time to start introducing experts to research in areas ranging from colloidal state theory to nanotechnology as well as their significant applications. This Special Issue serves to document these advances and support future research in this area by compiling relevant articles and reviews on this topic.

The scope of this Special Issue includes, but is not limited to, the following concepts:

  • Advances in colloidal systems—aerosols, foams, and emulsions, their characterization and methods (characterization of emulsions, foams, and aerosols, aspects of suspensions). Interfacial energetics, electrokinetics, colloid stability, colloid rheology.
  • Manufacturing and materials science applications (surface coatings, including paints, polymer synthesis, firefighting foams, etc.).
  • Biological and medical applications (vehicle carriers, polymers, coatings, emulsion carriers, colloids in diagnostics, smart materials in medicine).
  • Emerging areas in emulsions, foams, suspensions and aerosols (smart colloids and smart materials, nanomaterials and nanodispersions).

Dr. Miroslav Kohl
Prof. Dr. Andréa Kalendová
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Coatings is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • aerosols
  • foams
  • emulsions
  • application
  • methods

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  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

14 pages, 2358 KiB  
Article
Exploring the Potent Anticancer, Antimicrobial, and Anti-Inflammatory Effects of Capparis Spinosa Oil Nanoemulgel
by Ahmad M. Eid, Mohammed Hawash, Murad Abualhasan, Sabreen Naser, Mjd Dwaikat and Madleen Mansour
Coatings 2023, 13(8), 1441; https://doi.org/10.3390/coatings13081441 - 16 Aug 2023
Cited by 5 | Viewed by 2147
Abstract
Natural remedies derived from plants have a long history of usage in the treatment of a wide variety of severe diseases. This study aims to develop a Capparis spinosa (C. spinosa) oil nanoemulgel and evaluate its antimicrobial, anticancer, and anti-inflammatory effects. C. [...] Read more.
Natural remedies derived from plants have a long history of usage in the treatment of a wide variety of severe diseases. This study aims to develop a Capparis spinosa (C. spinosa) oil nanoemulgel and evaluate its antimicrobial, anticancer, and anti-inflammatory effects. C. spinosa oil was developed into a nanoemulsion using a self-nanoemulsifying method with Span 80 and Tween 80 as emulsifying agents. Carbopol hydrogel was mixed with the nanoemulsion to form nanoemulgel. After this, we tested the particle size, polydispersity index (PDI), rheology, antimicrobial, cytotoxic, and anti-inflammatory activities. The nanoemulsion formulation that has a PDI of 0.159 and a particle size of 119.87 nm is considered to be the optimum formulation. The C. spinosa oil nanoemulgel gave results similar to its nanoemulsion, where it had a PDI lower than 0.2, droplet size below 200 nm, and zeta potential less than −35. Also, it had a pseudoplastic rheological behavior. The C. spinosa oil nanoemulgel showed a significant effect on Methicillin-Resistant Staphylococcus Aureus (MRSA) and Klebsiella pneumoniae (K. pneumonia) (ATCC 13883) with zone inhibition diameters of 33 ± 1.9 mm and 30 ± 1.4 mm, respectively, as well as significant activities on the MCF-7, HepG2, and HeLa cancer cell lines with IC50 values of 194.98, 91.2, and 251.18 µg/mL, respectively, which were better than those of the original oil. Regarding its anti-inflammatory effect, C. spinosa oil had a positive impact on both COX-1 and COX-2 but was more selective for COX-1. Consequently, simple nanotechnology techniques provide a promising step forward in the development of pharmacological dosage forms. Full article
(This article belongs to the Special Issue Advances in Liquid Systems: Aerosols, Foams, and Emulsions)
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15 pages, 4620 KiB  
Article
Calculation and Lubrication Characteristics of Cylindrical Roller Bearing Oil Film with Consideration of Thermal Effects
by Mian Zhang, Xiqiang Ma, Nan Guo, Yujun Xue and Jishun Li
Coatings 2023, 13(1), 56; https://doi.org/10.3390/coatings13010056 - 28 Dec 2022
Cited by 5 | Viewed by 2616
Abstract
Aiming at the problem of how the thermal characteristics of cylindrical roller bearings affect the lubrication characteristics of bearings under actual working conditions, the influence of parameters such as speed and load on the lubrication characteristics of cylindrical roller bearings under thermal effects [...] Read more.
Aiming at the problem of how the thermal characteristics of cylindrical roller bearings affect the lubrication characteristics of bearings under actual working conditions, the influence of parameters such as speed and load on the lubrication characteristics of cylindrical roller bearings under thermal effects is analyzed. The numerical calculation method combining the quasi-static model of cylindrical roller bearing and the thermal elastohydrodynamic lubrication model is adopted. The effects of rotational speed, load and thermal effect on the lubrication performance of the bearing and the lubrication state under certain oil supply conditions were analyzed via numerical model calculation. The oil film thickness was measured via an immersion ultrasonic method to verify the correctness of the model. The results show that the larger the bearing speed, the larger the central film thickness and the minimum film thickness. At the same time, the thermal effect on the film thickness is more obvious; the greater the load, the greater the maximum oil film pressure. The film thickness gradient in the inlet region is greatly reduced, but the thermal effect has no obvious effect on the overall film thickness. In addition, there is a critical value of effective lubrication film thickness for each set of operating parameters. When the actual film thickness is equal to the critical value, the bearing lubrication state is at its best; the numerical simulation results are compared with the experimental values. Under the calculation conditions, the maximum error at the measuring point is within 10%, which meets the error requirements and provides a theoretical basis for revealing the bearing lubrication mechanism. Full article
(This article belongs to the Special Issue Advances in Liquid Systems: Aerosols, Foams, and Emulsions)
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13 pages, 2524 KiB  
Article
Experimental and Theoretical Study of Forced Synchronization of Self-Oscillations in Liquid Ferrocolloid Membranes
by Vladimir Chekanov, Anna Kovalenko and Natalya Kandaurova
Coatings 2022, 12(12), 1901; https://doi.org/10.3390/coatings12121901 - 5 Dec 2022
Cited by 1 | Viewed by 1223
Abstract
A ferrocolloid is a suspension of nanometer-sized ferromagnetic particles (magnetite) in a carrier liquid (kerosene). A unique feature of a ferrocolloid is the fact that layers consisting of densely packed particles are formed near the electrode surface under the influence of an external [...] Read more.
A ferrocolloid is a suspension of nanometer-sized ferromagnetic particles (magnetite) in a carrier liquid (kerosene). A unique feature of a ferrocolloid is the fact that layers consisting of densely packed particles are formed near the electrode surface under the influence of an external electric field. Each layer is a liquid membrane, and its formation significantly affects the various properties of the system. For example, the development of a unique phenomenon in a ferrocolloid is self-organization (self-oscillations and autowaves). The applied external periodic force leads to a change (capture) of the frequency of the autowave process-forced synchronization of autowaves. The experimentally obtained synchronization was investigated by the method of electrically controlled interference. After multiple experiments and theoretical studies, a physical mechanism for the synchronization of the autowave process in a cell with a ferrocolloid was proposed for the first time. A mathematical model of forced synchronization of autowaves, which is described by a system of nonlinear differential equations, was proposed for the first time as well. Adding an external periodic force into the model led to a change in the frequency of autowaves; synchronization by an external force was confirmed by computational experiments. Full article
(This article belongs to the Special Issue Advances in Liquid Systems: Aerosols, Foams, and Emulsions)
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