Cationic bilayers on polymeric particles: Effect of low NaCl concentration on surface coverage

Article Abstract:

The interaction between dioctadecyldimethylammonium bromide (DODAB), chloride (DODAC), or acetate (DODAAc) cationic bilayer fragments (BF) and polystyrene sulfate (PSS) particles is examined, by means of zeta-potential, and particle diameter analysis, at and above equivalence of total surface areas for bilayers and particles (A(sub b)/A(sub p)) over a range of low NaCl and lipid concentrations.

Acetates, Sodium chloride

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Adsorption of cationic lipid bilayer onto flat silicon wafers: Effect of ion nature and concentration

Article Abstract:

In situ ellipsometry is used to investigate the effect of monovalent salt nature and concentration over a range of low ionic strengths and at two different pH values on adsorption of dioctadecyldimethylammonium bromide (DODAB) bilayer fragments (BF) onto flat Si[O.sub.2] surfaces. The results have shown that ionic strength is a key factor in obtaining DODAB BF adsorption on the silicon wafer.

Optical properties, Cations, Adsorption, Properties, Structure, Ellipsometry

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Relationship between supersaturation ratio and supply rate of solute in the growth process of monodisperse colloidal particles and application to AgBr system

Article Abstract:

The supersaturational ratio, S, was theoretically related to the supply rate of solute, Q, from growth rate and mass-balance equations in the quasi-steady state in the growth process of isotropic monodisperse particles. The results revealed that the supersaturation ratio was found out to be 1.28 as an average.

Solution (Chemistry), Solutions (Chemistry), Silver compounds, Saturation (Electronics)

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