Short-chain alcohols

Article Abstract:

In situ synchrotron small angle X-ray scattering was used to study the formation of hexagonal and lamellar surfactant-silicate mesophases at room temperature with emphasis on the effect of butanol and hexanol on cosurfactant concentration and chain length. The addition of either HeOh or BuOH was found to lower curvature structures, with the HeOH having a more pronounced effect. Moreover, the one, two or three coexisting phases that were observed depended on the reaction composition.

Research, Surface active agents, Silicates, Alcohols, Butanol

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Two-dimensional lipid mixing entropy regulates the formation of multicomponent lipoplexes

Article Abstract:

An investigation of the mechanism of formation of multicomponent lipoplexes is presented by means of synchrotron Small-Angle X-ray diffraction (SAXD). The equilibrium structure of multicomponent lipoplexes is found to be unique and did not depend on the number and kind of populations composing lipid dispersion but only on the lipid species involved and on their relative molar ratio.

Pharmaceutical Preparation Manufacturing, Pharmaceutical preparations, Biological Product (except Diagnostic) Manufacturing, Biological products exc. diagnostic, Liposomes, Liposome Drug Delivery Systems, Usage, Observations, Lipoproteins, Thermal properties, Entropy (Physics), Entropy (Thermodynamics), Proteolipids

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Detailed in situ XRD and calorimetric study of the formation of silicate/mixed surfactant mesophases under alkaline conditions. Influence of surfactant chain length and synthesis temperature

Article Abstract:

The formation of mesoscopically ordered silica/surfactant composites under alkaline synthesis conditions are analyzed by using time-resolved in situ small-angle X-ray diffraction with synchrotron radiation. The two-step mechanism is confirmed by a microcalorimetric study where the heat evolved during the hydrolysis-condensation reactions is followed as a function of time.

All Other Basic Inorganic Chemical Manufacturing, Silicon & Inorganic Compounds, Spectra, Chemical synthesis, Silicon compounds, Chemical properties

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