Ashok K Tiwary
PUNJABI UNIVERSITY, PATIALA, INDIA
The study involved investigations on phase behavior and physicochemical characterization of microemulsions (MEs) stabilized by mixture containing polysorbates (C12-C18) as surfactants and n-alkanols (C2-C6) as cosurfactant. Distribution coefficient and Gibbs free energy were also determined for systems containing Tween 20 as surfactant. ME having Tween 20 as surfactant and ethanol as cosurfactant was found to exhibit maximium ME region as well as water solubilization capacity (WSC). Values of both these parameters were found to decrease as chain length of surfactant increased in all cases of alkanols with exception of Tween 80. This could be attributed to unsaturated structure of Tween 80 which presumably caused folding of chain and lesser oil penetration. Furthermore, the transition of w/o MEs to o/w MEs via bicontinuous structure along the dilution line was confirmed by conductivity, viscosity and droplet size analysis.
How to Cite
THATAI, Purva; TIWARY, Ashok K; SAPRA, Bharti.
Physicochemistry and Percolation behavior of Microemulsions as a Function of Chain Length of Cosurfactant and Surfactant.
Journal of Excipients and Food Chemicals
, [S.l.], v. 6, n. 2, p. 47-60, june 2015.
Available at: <https://ojs.abo.fi/ojs/index.php/jefc/article/view/868
>. Date accessed: 24 oct. 2021.
Original Research Articles
Phase behavior, water solubilization capacity, water dilution line, chain length, thermodynamic stability, gibbs free energy
Authors who publish with this journal agree to the following terms: Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).