Πλοήγηση ανά Θέμα "Surface active agents"
Αποτελέσματα 1-9 από 9
-
The effect of adsorption modeling on the stability of surfactant-laden liquid film flow
(2018)The primary instability of gravity-driven, liquid film flow is examined when the liquid contains a soluble surfactant. It is shown that the model adopted for the description of adsorption equilibrium affects significantly ... -
The effect of soluble surfactants on liquid film flow
(2012)We investigate experimentally the modifications in the dynamics of liquid film flow, resulting from the addition in water of the soluble surfactants iso-propanol (IP) and Sodium Dodecyl Sulfate (SDS). Recent experiments ... -
Essential oil-in-water microemulsions for topical application: structural study, cytotoxic effect and insect repelling activity
(2022)Essential oils (EOs) extracted from aromatic plants have been well recognized for their insect repellent properties. Although EOs are effective when freshly applied, their protective effect usually dissipates quickly due ... -
Halloysite nanotubes noncovalently functionalised with SDS anionic surfactant and PS-b-P4VP block copolymer for their effective dispersion in polystyrene as UV-blocking nanocomposite films
(2017)Asimple and versatilemethod is reported for the noncovalent functionalisation of natural and "green" halloysite nanotubes (HNTs) allowing their effective dispersion in a polystyrene (PS) thermoplastic matrix via solvent ... -
Measurements of the stabilisation of liquid film flow by the soluble surfactant sodium dodecyl sulfate (SDS)
(2016)Gravity-driven film flow of aqueous solutions of SDS is studied experimentally and the evolution of small-amplitude, regular inlet disturbances is investigated. With the addition of SDS, strong attenuation of non-linear ... -
A model of lung surfactant dynamics based on intrinsic interfacial compressibility
(2021)A minimum model for the description of lung surfactant dynamics during consecutive compression/relaxation cycles is proposed. The model is based on Frumkin/Langmuir equilibrium and on an equation of state that includes ... -
Stability of liquid film flow laden with the soluble surfactant sodium dodecyl sulphate: Predictions versus experimental data
(2020)Gravity-driven liquid film flows laden with a soluble surfactant are considered, and aqueous solutions of sodium dodecyl sulphate (SDS) are taken as a case-study. Literature measurements of the critical Reynolds number for ... -
Structure, activity and dynamics of extra virgin olive oil-in-water nanoemulsions loaded with vitamin D3 and calcium citrate
(2020)Extra virgin olive oil-in-water (O/W) nanoemulsions loaded with vitamin D3 and calcium citrate were developed and studied in terms of structure, activity and dynamics. The nanoemulsions were formulated with a two-step ... -
Surfactant-laden film lining an oscillating cap: Problem formulation and weakly nonlinear analysis
(2022)A surfactant-laden liquid film that lines the inside of an oscillating spherical cap is considered as a model of lung alveoli. Pulmonary surfactant solubility is described by Langmuir adsorption kinetics, modified by ...