Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics, 92-50-2, Name is 2-(Ethyl(phenyl)amino)ethanol, SMILES is CCN(CCO)C1=CC=CC=C1, belongs to amides-buliding-blocks compound. In a document, author is Shen, Tao, introduce the new discover, Category: amides-buliding-blocks.
Effects of unsaturated double bonds on adsorption and aggregation behaviors of amide-based cationic Gemini surfactants
Four cationic amide Gemini surfactants, containing unsaturated and saturated hydrophobic chains, were synthesized from oleamide propyl dimethylamine (PKO-18:1) and stearate amide propyl dimethylamine(PKO-18). The chemical structures of the synthesized compounds were characterized by FT-IR spectra and H-1 NMR. The Krafft temperatures were experimentally determined.. Their critical micelle concentration(CMC) in the aqueous solutions were determined by surface tension and conductivity methods. Equilibrium surface tension parameters such as gamma(cmc), pC(20), Gamma(max), A(min), Delta G degrees(mic)(Gibbs free energy of micellization), Delta G degrees(ads)(Gibbs free energy of adsorption) were obtained. Their adsorption behavior was analyzed through dynamic surface tension. Also, their self-assembly behaviors were investigated by negative-stained transmission electron microscopy(TEM) and critical packing parameter calculation. The results showed that the unsaturated double bond in hydrophobic chains was favorable for lowering the Krafft temperature and CMC. The oleamide-based Gemini surfactants present a lower Krafft temperature, higher surface activity and the adsorption kinetic process were conformed mixed diffusion-kinetic control model. The TEM results showed that the oleamide-based Gemini surfactants containing unsaturated double bonds in hydrophobic chains preferentially form worm-like micelles in solution. However, the stearate amide Gemini surfactants whose hydrophobic chains are saturated alkyl chains tend to form spherical aggregates in solution.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 92-50-2 is helpful to your research. Category: amides-buliding-blocks.