AI Article Synopsis
- The article reviews the use of Atomic Force Microscopy (AFM) to study interactions and film drainage in deformable bodies in aqueous solutions, highlighting its role in understanding colloidal interactions.
- It presents new experimental designs and methodologies that enhance the effectiveness of AFM in probing these interactions while discussing the impact of DLVO and non-DLVO forces on colloid stabilization.
- Despite significant findings, the study notes unresolved issues related to the behavior of deformable drops and the need for further research on surfactants' effects on interfacial properties.
Article Abstract
The applications of Atomic Force Microscopy (AFM) on the study of dynamic interactions and film drainage between deformable bodies dispersed in aqueous solutions are reviewed in this article. Novel experimental designs and recent advances in experimental methodologies are presented, which show the advantage of using AFM as a tool for probing colloidal interactions. The effects of both DLVO and non-DLVO forces on the colloid stabilization mechanism are discussed. Good agreement is found between the force - drop/bubble deformation behaviour revealed by AFM measurements and the theoretical modeling of film drainage process, giving a convincing explanation of the occurrence of certain phenomenon. However, the behaviour and shape of deformable drops as they approach or retract is still not well resolved. In addition, when surfactants are present further research is needed on the absorption of surfactant molecules into the interfaces, their mobility and the effects on interfacial film properties.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.cis.2015.08.005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Study on Aqueous Film Forming Foam Extinguishing Agents Based on Perfluorobranched Short-Chain Fluorocarbon-Hydrocarbon Surfactant Complex Mixtures.
Langmuir
January 2025
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
Aqueous film-forming foam (AFFF) is a targeted product for liquid fuel fires and has the benefits of a long storage period and high fire extinguishing efficiency. However, because of the toxicity and bioaccumulation of the core raw material's long-chain fluorocarbon surfactant, traditional AFFF is being phased out. For this reason, three efficient AFFFs (F-1, F-2, and F-3; more details in Table 2) were designed using anionic surfactants (PBAF) with branched C perfluorinated chains, hexadecyltrimethylammonium bromide (CTAB), and dodecyl dimethyl betaine (BS-12) as core materials.
View Article and Find Full Text PDFRobot-assisted laparoscopic ipsilateral ureteroureterostomy for duplex kidneys in children: preliminary single-center experience.
Front Pediatr
January 2025
Department of Urology, Anhui Provincial Children's Hospital, Hefei, China.
Objective: This study evaluates the efficacy and safety of robot-assisted laparoscopic ipsilateral ureteroureterostomy (RAL-IUU) in treating children with duplex kidney ureteral malformations by detailing our early single-center experience.
Materials And Methods: We conducted a retrospective analysis of clinical data from 14 children with complete duplex kidney ureteral malformations treated with RAL-IUU at our institution from December 2021 to January 2024. Clinical data included patient demographics, surgical details, and postoperative outcomes.
Development and characterization of a surfactant responsive to redox conditions for gas recovery in foam drainage.
Sci Rep
January 2025
Research Institute of Natural Gas Technology, PetroChina Southwest Oil & Gas Field Company, Chengdu, 610213, Sichuan, China.
To address the challenge of reusing foaming agents in foam drainage gas production processes, we developed a redox-responsive surfactant with a straightforward preparation method based on molecular electrostatic interaction assembly. The redox response mechanism of the surfactant was investigated through surface tension, absorbance, particle size, and Zeta potential analyses. Results indicate that the minimum surface tension in the oxidized state can reach 26.
View Article and Find Full Text PDFEgg white protein‑sodium alginate smart labels based on pH-driven method and nonphase change 3D printing in mackerel freshness response.
Int J Biol Macromol
December 2024
Food Technology Department, Faculty of Agriculture, Benha University, Moshtohor 13736, Egypt.
The smart labels prepared via the casting method and molten 3D printing method have a long heating time at high temperature and a dense network structure, resulting in a decrease in the color response ability of the labels. Therefore, this study uses a nonphase change foam 3D printing method with a shorter heating time to improve the color sensitivity of smart labels. By the pH driving method, the blending and pregelation of sodium alginate (Alg) can extend the drainage time of the interfacial film to the maximum extent, thus further improving the foam stability of egg white protein (EWP) and endowing the interfacial adsorption layer with better flexibility and fluidity.
View Article and Find Full Text PDFComparative study on the enhancement of the stability of siloxane-based Gemini/sodium alpha-alkenyl sulfonate mixed dispersions using xanthan gum, carboxymethyl cellulose, and gelatin.
Int J Biol Macromol
December 2024
Qingdao Sunefire Science & Technology Shares Co., Ltd, Qingdao 266423, China.
Article Synopsis
- Polymers are being studied as eco-friendly alternatives to fluorinated foam extinguishing agents, focusing on how they affect the performance of non-fluorinated foams.
- The research examines the impact of xanthan gum, sodium carboxymethyl cellulose, and gelatin on various properties such as viscosity, conductivity, and foam stability of a specific siloxane-based mixture.
- Results indicate that while the polymers increased viscosity and conductivity, they also decreased foamability, with gelatin enhancing surface activity and contributing to prolonged drainage times and film stability.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!