What is microemulsion based gel?
The developed microemulsion-based gel may be a potential drug delivery vehicle for targeted topical delivery of tazarotene in the treatment of acne. Keywords: Acne; microemulsion; skin irritation study; skin retention study; tazarotene; topical drug delivery.
What are the four compositions of microemulsion?
4 Microemulsions. Microemulsions are clear, thermodynamically stable, isotropic liquid mixtures of oil, water, surfactant, and cosurfactant.
What is microemulsion used for?
Microemulsions have many commercially important uses: Water-in-oil microemulsions for some dry cleaning processes. Floor polishers and cleaners. Personal care products.
What is microemulsion technology?
Microemulsion Technology for Improved Fluid Recovery and Enhanced Core Permeability to Gas. Microemulsions are unique, thermodynamically stable, optically clear single phase blends of water, biodegradable water-immiscible solvent, co-solvent, and specially designed surfactant.
Is a microemulsion a solution?
A microemulsion is a thermodynamically stable fluid that differs from kinetically stable emulsions, which will separate into oil and water over time. The particle size of microemulsions ranges from about 10–300 nm. Because of this small particle size, microemulsions appear as clear or translucent solutions.
What is microemulsion polymerization process?
Definition. Microemulsion polymerization is defined as polymerization involving a radical chain propagation reaction with vinyl monomers in one phase of a microemulsion, and the produced polymer colloid is denoted as latex.
What are the advantages of microemulsion?
Microemulsions have been proposed as drug delivery systems to enhance the absorption of drug across biological membranes (Majuru and Oyewumi, 2009). Some of microemulsions advantages include: (1) increased solubility and stability of drugs, and (2) ease and economical scale-up.
What is microemulsion synthesis?
Synthesis of nanoparticles by microemulsion method is an area of considerable current interest. Due to their unique properties, namely, ultralow interfacial tension, large interfacial area, thermodynamic stability and the ability to solubilize otherwise immiscible liquids.
What makes a microemulsion?
Microemulsions are composed of nanometer-sized droplets of an immiscible liquid dispersed in another liquid. The components of a microemulsion are water, oil, a surfactant, and a cosurfactant, which is usually a short-chain alcohol.
Is microemulsion transparent?
Microemulsions are stable transparent dispersions of water and oil (mixture of various hydrocarbons and olefins) and surfactant. They are prepared by simple mixing of the components and do not require specific preparation conditions.
Which of the following properties are characteristics of microemulsion?
Microemulsions are stable transparent dispersions of water and oil (mixture of various hydrocarbons and olefins) and surfactant. In contrast, the existence of w/o droplets is a characteristic of microemulsions where the water fraction is low. Droplet diameter varies in the range of 10–140 nm.
Why are microemulsion thermodynamically stable?
Micro-emulsion is thermodynamically stable as its Gibbs free energy caused by some effects becomes negative. Then the micro emulsion become thermodynamically stable.