Vigilancia Tecnológica

The synthesized amphiphilic star block macromolecules above their CMC point, which is determined by the fluorometric method, form micellar particles. Using the DLS technique, the size distribution of these particles and their average hydrodynamic diameter are determined. The formed micelles are well visible by TEM technique.AbstractAn amphiphilic three?armed star polymer was synthesized through the polar cycloaddition reaction of a polyethylene glycol?based macro?triazide with an Yne?terminated polycaprolactone in a molar ratio of 1:3 (click chemistry). Thus, each arm is itself a di?block copolymer branched from the core, which is a 1,3,5?triazine ring. The attachment of the pre?synthesized hydrophobic segments to the hydrophilic segments in each arm leads to the creation of a 1,2,3?triazole ring in the structure. Fourier transform infrared (FTIR) and proton nuclear magnetic resonance (H?NMR) spectroscopies were used to verify the structures. The micellization process of the prepared amphiphilic polymer was investigated in aqueous medium. For this purpose, the critical micelle concentration (CMC) was specified by the fluorometric method. Using the transmission electron microscopy (TEM) technique, it was observed that spherical self?assemblies with a mean diameter of