Water-in-oil-in-water double emulsions (W/O/W) consist of dispersed oil globules containing smaller aqueous droplets. These materials offer interesting possibilities for the controlled release of chemical species initially entrapped in the internal droplets. A better understanding of the stability conditions and release properties in double emulsions requires the use of model systems with a well-defined droplet size. In this paper, we use quasi-monodisperse double emulsions made of calibrated water droplets and oil globules to investigate the two mechanisms that are responsible for the release of a chemical substance (NaCl). (i) One is due to the coalescence of the thin liquid film separating the internal droplets and the globule surfaces. (ii) The other mechanism termed as 'compositional ripening' occurs without film rupturing; instead it occurs by diffusion and/or permeation of the chemical substance across the oil phase. By varying the proportions and/or the chemical nature of the surface active species it is possible to shift from one mechanism to the other one. We therefore study separately both mechanisms and we establish some basic rules that govern the behavior of W/O/W double emulsions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0168-3659(01)00535-1 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Biodegradable polymeric microsphere formulations of full-length anti-VEGF antibody bevacizumab for sustained intraocular delivery.
Drug Deliv Transl Res
January 2025
Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, Northeastern University, Boston, MA, 02115, USA.
Age-related macular degeneration (AMD) is one of the leading causes of central vision loss in the elderly population. Bevacizumab, a full-length humanized monoclonal anti-VEGF antibody, is commonly used off-label drug to treat AMD. However, the dosing regimen of bevacizumab and other anti-VEGF antibodies requires monthly intravitreal injections followed by regular intravitreal injections at 4-16-week intervals.
View Article and Find Full Text PDFEnhanced Immunogenicity of Foot-and-Mouth Disease Virus-like Particles Using a Water-in-Oil-in-Water Adjuvant.
Vaccines (Basel)
December 2024
Institute of Veterinary Immunology & Engineering, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China.
Background: Foot-and-mouth disease (FMD) causes significant economic losses, prompting vaccination as a primary control strategy. Virus-like particles (VLPs) have emerged as promising candidates for FMD vaccines but require adjuvants to enhance their immunogenicity. In this study, we evaluated the immunogenicity of a VLP-based vaccine with a water-in-oil-in-water (W/O/W) emulsion adjuvant, named WT.
View Article and Find Full Text PDFEnhancing walnut butter with a pea protein isolate-pectin-pterostilbene complex: Physicochemical properties and stability analysis.
Food Res Int
February 2025
School of Food and Nutrition, Joint Research Center for Food Nutrition and Health of IHM, Anhui Agricultural University, Hefei, China; Key Laboratory of Jianghuai Agricultural Product Fine Processing and Resource Utilization, Anhui Engineering Research Center for High Value Utilization of Characteristic Agricultural Products, Anhui Agricultural University, Hefei, China. Electronic address:
To explore the potential applications of pea protein isolate-pectin-pterostilbene complex (PPI-PEC-PT) in the sauce industry, its solubility, antioxidant capacity and oxidative stability were measured. The results indicated that PPI-PEC-PT exhibited a solubility of 77.67 %, more than double that of PPI-PT (31.
View Article and Find Full Text PDFKonjac glucomannan foams integrated with bilayer phase change microcapsules for efficient heat storage and thermal insulation.
Carbohydr Polym
March 2025
Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Key Laboratory of Industry Microbiology, Hubei Collaborative Innovation Center of Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China; Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK. Electronic address:
The traditional foams can only block heat loss, and cannot effectively store and release heat energy on demand to extend the insulation time. In this work, the paraffin-rich monolayer microcapsules were prepared using negatively charged phosphorylated cellulose nanofibers (CNF) as the emulsifier of Pickering emulsion. The positive chitosan was assembled on the surface of the monolayer microcapsules through an electrostatic layer-by-layer self-assembly method to prepare the bilayer microcapsules.
View Article and Find Full Text PDFBiomimetic exosome harnessing exosomal lipidomics and functional proteins for PEDF-pDNA delivery in high altitude pulmonary edema intervention.
J Control Release
January 2025
School of Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu Province, China. Electronic address:
In the realm of gene therapy, given the exceptional performance of native exosomes, researchers have redirected their innovative focus towards exosome-mimetic nanovesicles (EMNs); however, the current design of most EMNs relies heavily on native cells or their components, inevitably introducing inter-batch variability issues and posing significant challenges for quality control. To overcome the excessive reliance on native cellular components, this study adopts a unique approach by precisely mimicking the lipid composition of exosomes and innovatively incorporating histone components to recapitulate the gene transfer characteristics of exosomes. We selected sphingomyelin (SM), phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylethanolamine (PE), and cholesterol as the lipid components, and employed the double emulsion method to prepare biomimetic exosomes carrying histone A and PEDF-DNA plasmids (His-pDNA@EMNs).
View Article and Find Full Text PDFWant 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!