2-Ethylhexanol Derivatives as Nonionic Surfactants: Synthesis and Properties
| Autor: | Karolina Dąbrowska, Wiesław Hreczuch, Arkadiusz Chruściel, Agata Sznajdrowska, Katarzyna Materna |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Homologue distribution
General Chemical Engineering Alcohol 02 engineering and technology 010402 general chemistry 01 natural sciences Micelle Surface tension chemistry.chemical_compound Propoxylation Organic chemistry 2-Ethylhexanol Solubility Physical and Theoretical Chemistry Nonionic surfactants Ethoxylation 021001 nanoscience & nanotechnology 0104 chemical sciences Hydrophobe Surfaces Coatings and Films chemistry Chemical Engineering(all) Original Article Wetting 0210 nano-technology Surface activity Foaming |
| Zdroj: | Journal of Surfactants and Detergents ResearcherID |
| ISSN: | 1558-9293 1097-3958 |
| Popis: | The synthesis and basic properties of 2-ethylhexanol based innovative nonionic surfactants are described in this paper. 2-Ethylhexanol as an available and relatively inexpensive raw material was used as the hydrophobe source modified by propoxylation and followed by polyethoxylation. As the result, six series of 2-ethylhexyl alcohol polyalkoxylates (EHPmEn) were obtained with three steps of propoxylation, each followed by polyethoxylation and two series only with polyethoxylation (EHEn). Two different catalysts were used, a dimetalcyanide and KOH. Values of average conversion rates and chemical content of the obtained products (GC, TG and GPC techniques) were compared. The influence of the applied catalyst and polyaddition degree on the homologue distribution, reactant conversion and amount of byproducts is discussed. The basic physicochemical parameters including refractive index, solubility in polar media, foaming properties and wettability were investigated and compared. Furthermore, surface activity parameters, i.e. surface tension (γCMC) and critical micelle concentrations were determined. Results are compared to C12–14 alcohol ethoxylates (LaEn). Accordingly, it was found that the studied 2-ethylhexyl alcohol based compounds are effective, low foaming nonionic surfactants. |
| Databáze: | OpenAIRE |
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