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Wetting and spreading processes which involve surfactant solutions are widely used in numerous industrial and practicalapplications nowadays.The performance of different non-ionic surfactants may vary significantly and so far superspreadersolutions show the most promising spreading ability.The addition of trisiloxane surfactants to water was proven to enhancewetting,even on hydrophobic surfaces,on which conventional surfactants seem to have little or no effect.Although theseextraordinary surfactants have been extensively studied over recent years,complete understanding of their underlying mechanismsand a suitable mathematical model are still lacking.Here we present a possible explanation for the impressive performanceof trisiloxane,which is compared to wetting enhancement of a conventional surfactant.Additionally,we will explain whythe hydrophobicity of the surface is a crucial factor for the spreading phenomenon.Light will be also shed on the effect of the pHof the solution to which surfactants are added.Finally,we will investigate long-term effects of the water environment on trisiloxanewetting ability and discuss if ageing may significantly affect their performance.
Wetting and spreading processes which involve surfactant solutions are widely used in numerous industrial and practicalapplications nowadays. The performance of different non-ionic surfactants may vary significantly and so far superspreader solutions show the most promising spreading ability. The addition of trisiloxane surfactants to water was proven to enhancewetting, even on hydrophobic surfaces, on which conventional surfactants seem to have little or no effect .Although theseextractoral surfactants have been extensively studied over recent years, complete understanding of their underlying mechanisms and a suitable mathematical model are still lacking. for the impressive performance of trisiloxane, which is compared to wetting enhancement of a conventional surfactant. Additionally, we will explain why the hydrophobic of the surface is a crucial factor for the spreading phenomenon. Light will be shed on the effect of the pH of the solution to which s urfactants are added.Finally, we will investigate long-term effects of the water environment on trisiloxanewetting ability and discuss if aging can significantly affect their performance.