I see in some references like doi: 10.1021/acs.analchem. 1c02335 and /10.1016/j.colsurfb.2022.113114, mention that it is necessary to dilute the concentration of surfactant during the process of cross-linking of droplet microfluidic produced calcium alginate microgel. kind of wonder why it is necessary to take this dilution step, is it for the better exchange of substance in and out of the droplet? need to read some scientific explanation to back up the necessity of this step.
Chris Chan
The negative ion of calcium alginate will interact with the cationic surfactant. The ionic-hydrophobic interaction will be stronger when the surfactants are dilute and do not form micelles. Otherwise, the solution must be below the surfactant micelle formation concentration.
Yu. A. Mirgorod, A.I. Chepenko. Cooperative effect in the interaction of two organic ions with opposite signs. Colloid Journal. 1980.V.42. 367-370.(Russian).
Yu.A.Mirgorod. Association of s-alkylisothiuronium bromides using the example of the interaction of two large ions with opposite charges. Ukrainian Сhemical Journal.1981.V.47.206-210.(Russian).
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