Cationic gemini surfactants containing an O-substituted spacer and hydroxyethyl moiety in the polar heads: self-assembly, biodegradability and aquatic toxicity
| Autor: | Bogumił Brycki, M. Teresa Garcia, Olga Kaczerewska, Francesc Comelles, Isabel Ribosa |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España) |
| Rok vydání: | 2017 |
| Předmět: |
O-containing spacer
General Chemical Engineering 02 engineering and technology Aerobic biodegradation 010402 general chemistry 01 natural sciences Aquatic toxicology Hydroxyethyl moiety chemistry.chemical_compound CMC Polymer chemistry Organic chemistry Moiety Aquatic toxicity Cationic polymerization Biodegradation 021001 nanoscience & nanotechnology 0104 chemical sciences Gemini surfactants Monomer chemistry Critical micelle concentration Polar Self-assembly 0210 nano-technology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Micellization and some ecological properties of new cationic gemini surfactants with oxygen-substituted spacer and hydroxyethyl groups connected to the polar heads have been studied. The incorporation of a hydroxyethyl group in the polar head favors self-aggregation whereas the presence of the oxygen in the spacer increases critical micelle concentration. Surfactants investigated are not biodegradable due to their toxic effect on microorganisms responsible for biodegradation. Aquatic toxicity increases with the hydrophobic chain and decreases by increasing the hydrophilicity of spacer and polar heads. New gemini surfactants are less toxic to the aquatic environment than monomeric surfactants and non-oxygen-containing gemini surfactants. The authors thanks to Renata Kulesza and Karolina Kozupa from the Institute of Heavy Organic Synthesis, Kedzierzyn-Koźle, Poland, for making the equipment for preliminary study of cmc available. This work was supported by the Spanish Ministry of Economia y Competitividad (CTQ2013-41514-P) and the National Center for Research and Development (Poland; TANGO1/266340/NCBR/2015). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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