A Review on Microemulsion: An Update | Chapter 5 | Novel Aspects on Pharmaceutical Research Vol. 9

 Microemulsions are stable mixtures of both water and lubricate that have an interfacial coating caused by a surfactant and a co-surfactant that organizes hydrophilic-hydrophobic micelles. Due to their capacity to solubilize two together hydrophilic and lipophilic medicines, extended shelf life, simplicity of produce, and enhanced bioavailability, they have brought interest as pharmaceutical excipients. This study discusses the benefits, disadvantages, principles, arrangements, commercial lipid-based developments, formulation, aspect behaviors, techniques, writing, and pharmaceutical uses of microemulsions.

Author(s) Details:

D. Nagasamy Venkatesh,
Department of Pharmaceutics, JSS College of Pharmacy, (JSS Academy of Higher Education & Research, Mysuru), Ooty - 643 001, The Nilgiris, Tamil Nadu, India.

N. Arun,
Department of Pharmaceutics, JSS College of Pharmacy, (JSS Academy of Higher Education & Research, Mysuru), Ooty - 643 001, The Nilgiris, Tamil Nadu, India.

S. D. Shanmugakumar,
Jyothishmathi Institute of Pharmaceutical Sciences, Thimmapur, Karimnagar, Telanagana - 505481, India.

Please see the link here: https://stm.bookpi.org/NAPR-V9/article/view/11898

Micelles as Supercages for Bimetallic Nanoparticles Synthesis| Chapter 8 | Recent Progress in Science and Technology Vol. 2

 The bettering of the bimetallic nanoparticles characteristics depends the ability to tune the alloy arrangement and surface features, which requires an progressive control of the synthetic design. We carried out a calculating simulation study on the formation of bimetallic nanoparticles apiece microemulsion route. A comprehensive reasoning of the resulting nanostructures was acted in the light of the influence of intermicellar exchange on reactivity. For a couple of metals whose dissimilarity in standard reduction potentials is about 0.2- 0.3 V, and utilizing a quite flexible surfactant, the response rate of each metal was listened versus occasion using different catalyst proportions. It was confirmed that reaction rates depends not only on the synthetic reduction rate but also on intermicellar rate of exchange, because the intermicellar exchange plays as drug pump, which results in an growth of slower forerunners within micelles, with improving the slower synthetic reduction. So the duller reduction rate strongly depends on the portion of reactants in micelles. On the contrary, faster reduction rate is just restricted by the intermicellar rate of exchange, and no reactants accumulation takes place. This different interaction between two together metal decline rates and the compartmentalization of the reaction media have key consequences on the sequence of metals decline. Hence different precursor portions leads to different sequences of metals decline, so the arrangement of two together metals in the resulting nanostructure can be maneuvered just by changing the forerunner proportions.

Author(s) Details:

C. Tojo,
Physical Chemistry Department, Faculty of Chemistry, University of Vigo, E-36310, Vigo, Spain.

E. Gonzalez,
Physical Chemistry Department, Faculty of Chemistry, University of Vigo, E-36310, Vigo, Spain.

N. Vila-Romeu,
Physical Chemistry Department, Faculty of Sciences, University of Vigo, E-32004, Ourense, Spain.

Please see the link here: https://stm.bookpi.org/RPST-V2/article/view/9239

Comparative Study on Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions | Chapter 12 | Current Perspectives on Chemical Sciences Vol. 10

 A comparison of several bimetallic nanocatalysts made from microemulsion utilising a one-pot approach was conducted. The combination of experimental observations and simulation research provides a complete understanding of the elements that influence nanoparticle architecture: 1.- In bimetallic nanocatalysts, metal segregation is the result of a combination of three main kinetic parameters: metal precursor reduction rate (related to reduction standard potentials), material intermicellar exchange rate (determined by microemulsion composition), and metal precursor concentration. 2.- To create a core-shell structure, a minimum difference of 0.20 V between the reduction standard potentials of the two metals is required. The formation of alloys cannot be avoided for values ° less than 0.20 V, regardless of whether the microemulsion is changed or the metal concentration is increased. 3.- The higher the degree of mixing in the nanocatalyst, the more flexible the film around the micelles is. 4.- A core-shell structure requires a minimal concentration of metal precursors. This minimum concentration is determined by the flexibility of the microemulsion as well as the differential in reduction rates.

Author (s) Details

C. Tojo
Physical Chemistry Department, University of Vigo, E-36310, Vigo, Spain.

D. Buceta
Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782, Santiago de Compostela, Spain.

M. A. López-Quintela
Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782, Santiago de Compostela, Spain.

View Book :- https://stm.bookpi.org/CPCS-V10/article/view/1233

Experiments on the Formation and Solubilization Property of Water-in-Oil Microemulsions of Alkyl Glucosides | Chapter 2 | Emerging Trends in Engineering Research and Technology Vol. 9

 The dependence of solubilization properties on the alkyl chain length of alkyl glucosides (AG) in

AG/isooctane/n-butanol/water system was investigated. The stable Winsor II system consisting of a
water-in-oil (w/o) microemulsion phase and an aqueous phase was formed in AG/ isooctane/nbutanol/water system. The apparent critical micelle concentration of AG reverse micelles in organic
phases was markedly dependent upon the alkyl chain length of AG. The limiting amount of solubilized
water increased with an increase in the alkyl chain length of AG. The solubilization capacity of methyl
orange (MO) was superior to that of methylene blue (MB), and the solubilization capacities of MO and
MB tended to increase with increasing the alkyl chain length of AG. Reverse micelles of dodecyl
glucoside (AG12) exhibited the significant solubilization capacities of cytochrome c and lysozyme,
while ribonuclease A was not solubilized by AG12 reverse micelles.

Author(s) Details

Hidetaka Noritomi
Department of Applied Chemistry, Tokyo Metropolitan University, Tokyo, Japan.

View Bookl :- https://bp.bookpi.org/index.php/bpi/catalog/book/235