22890-10-4Relevant articles and documents
Synthesis and antimicrobial characterization of novel l-lysine gemini surfactants pended with reactive groups
Tan, Hong,Xiao, Huining
, p. 1759 - 1761 (2008)
A series of novel quaternary ammonium gemini surfactants of l-lysine containing ester group were synthesized with high yield rate. The antibacterial and antifungal activities of these gemini surfactants were evaluated by quantifying the minimal inhibitory concentration (MIC). The results indicated that the quaternary ammonium gemini surfactants exhibited improved activity against a broad spectrum of Gram-positive and Gram-negative bacteria as well as fungi. The pended ester group provides a reactive site for incorporating the surfactant into polymers, thus leading to the polymers with high antimicrobial efficiency.
Amidoamine Gemini surfactants based dimethylamino propyl amine: Preparation, characterization and evaluation as biocide
Shaban, Samy M.,Aiad,Moustafa,Hamed, Ahmed
, p. 907 - 914 (2015)
The chemical structures of three prepared amidoamine Gemini surfactant were confirmed using FTIR and 1HNMR spectroscopic methods. The synthetic routes passed through two steps, the first one is the formation of the amide and the second one is the quaternization of the prepared amide with dibromo propane. The surface and thermodynamic parameters were determined from surface tension and conductivity measurements. The obtained critical micelle concentrations from both techniques are similar. The values of CMC were found to depend on both solution temperature and hydrophobic character. The change in free energy of micellization and adsorption showed a tendency of synthesized Gemini surfactants to adsorb at the interface first then forming micelle in the bulk. The prepared Gemini surfactants act as good antibiotic against some tested bacteria and fungi.
Continuous Method For Producing Fatty Acid Amides
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Page/Page column 10, (2011/05/03)
The invention relates to a continuous method for producing fatty acid amides, according to which at least one fatty acid of formula (I), [in-line-formulae]R3—COOH??(I)[/in-line-formulae] wherein R3 is an optionally substituted aliphatic hydrocarbon radical, is reacted with at least one amine of formula (II), [in-line-formulae]HNR1R2??(II)[/in-line-formulae] wherein R1 and R2 are independently hydrogen or a hydrocarbon radical comprising between 1 and 100 C atoms, to form an ammonium salt, and said ammonium salt is then reacted to form a fatty acid amide, under microwave irradiation in a reaction pipe, the longitudinal axis of the pipe being oriented in the direction of propagation of the microwaves of a monomode microwave applicator.