Study of the interaction between a nonyl phenyl ether and beta-cyclodextrin: Declouding nonionic surfactant solutions by complexation

Article Abstract:

Various absorption and fluorescence measurements are carried out to study the aqueous solutions containing pentaoxyethylene nonyl phenyl ether (NPE) in the presence of beta-cyclodextrin, which is further used to analyze the effect of complexation on the aggregation of the surfactant. The results prove that encapsulating agents can be widely used for avoiding the clouding process of nonionic surfactants, hence making it useful for a wide range of applications.

Cyclodextrins, Aqueous solution reactions

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Volumetric determination of the hydration state in nonionic surfactant solutions

Article Abstract:

Density and sound velocity measurements were performed on water solutions of the nonionic surfactant belonging to the family of the oligooxyetylene glycol with i=12 and j ranging from 5 to 8 EO units. With the help of a comparison of the values with those obtained for solutions of water and PEG (a polymer composed by j EO units, an estimation of the degree of hydration was carried out.

Polymers

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Nonionic surfactant and temperature effects on the viscosity of hydrophobically modified hydroxyethyl cellulose solutions

Article Abstract:

Nonionic surfactant and temperature effects on the viscosity of hydrophobically modified hydroxyethyl cellulose (HMHEC) solution are experimentally investigated. Weak shear thickening at intermediate shear rates takes place for HMHEC at moderate concentrations and becomes more significant at lower temperatures.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Ethyl Cellulose, Thermal properties, Dehydration (Chemical process), Cellulose ethers

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