Effect of Organized Assemblies, Part VII: Adsorption Behavior of Polyoxyethylated Nonyl Phenol at Silica−Cyclohexane Interface and Its Efficiency in Stabilizing the Silica−Cyclohexane Dispersion
| العنوان: | Effect of Organized Assemblies, Part VII: Adsorption Behavior of Polyoxyethylated Nonyl Phenol at Silica−Cyclohexane Interface and Its Efficiency in Stabilizing the Silica−Cyclohexane Dispersion |
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| المؤلفون: | Uma Dash, Ponisseril Somasundaran, Pramila Kumari Misra |
| المصدر: | Industrial & Engineering Chemistry Research. 48:3403-3409 |
| بيانات النشر: | American Chemical Society (ACS), 2009. |
| سنة النشر: | 2009 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Cyclohexane, Chemistry, General Chemical Engineering, General Chemistry, Industrial and Manufacturing Engineering, Solvent, chemistry.chemical_compound, Adsorption, Hydrocarbon, Pulmonary surfactant, Settling, Chemical engineering, Polymer chemistry, Phenol, Dispersion (chemistry) |
| الوصف: | The adsorption behavior of a series of nonionic polyoxyethylated nonyl phenol surfactants having same hydrocarbon chain length but varying oxyethylene chain has been studied spectrophotometrically at the silica−cyclohexane interface. The adsorption density is found to be independent of the number of oxyethylene units throughout the adsorption isotherms, except at higher surface coverage, where the adsorption density decreases with the increase in the number of oxyethylene units. The settling rate of the silica particles in cyclohexane decreases with the increase in adsorption density as well as oxyethylene chain length. On the other hand, the sediment volume decreases with the increase in the adsorption density, with a minimum for the surfactant having the least number of oxyethylene units. Surfactants with a longer oxyethylene chain partitions preferentially to the bulk solvent at higher concentrations, as a result of the change in the polarity of the medium. On the basis of adsorption density, settling ... |
| تدمد: | 1520-5045 0888-5885 |
| DOI: | 10.1021/ie801283f |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::a8a4f22948c2a65226b51f51f7d02c3c https://doi.org/10.1021/ie801283f |
| رقم الانضمام: | edsair.doi...........a8a4f22948c2a65226b51f51f7d02c3c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205045 08885885 |
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| DOI: | 10.1021/ie801283f |