Open AccessFrom micelle to microemulsion: an investigation of structural changes using molecular dynamics
Author(s) -
Amir Amani,
Milad Amani
Publication year - 2015
Publication title -
journal of contemporary medical sciences
Language(s) - English
Resource type - Journals
eISSN - 2415-1629
pISSN - 2413-0516
DOI - 10.22317/jcms.v1i1.57
Subject(s) - microemulsion , micelle , pulmonary surfactant , molecular dynamics , chemical engineering , materials science , molecule , work (physics) , chemistry , nanotechnology , chemical physics , organic chemistry , thermodynamics , computational chemistry , physics , aqueous solution , engineering
Objective Although a huge number of experimental works may be observed in the literature for microemulsions, modelling reports onthese nano-systems are rare. Additionally, no comprehensive work so far has detailed the changes occurring to a micellar droplet when oilmolecules are introduced (i.e. obtaining microemulsions from micelles). This work aimed to simulate a micelle and a microemulsion systemcontaining polysorbate 80 - as surfactant - and study the structural changes in the two systems.Methods Molecular dynamics simulation employing a coarse-grained model was used.Results The results showed that the oil molecules located in the hydrophobic core of the micelle make its size larger, while the co-surfactantmolecules distribute throughout the system and enter the hydrophilic shell of the micelle.Conclusion It was shown that insertion of oil molecules makes the droplets more spherical, while co-surfactants tend to enlarge them.