Enhancement of the Biological activity for Esterified polyethylene glycols by blending them with Sr –Co Nanoferrites

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Abstract The poly (ethylene glycols) (PEG) were esterified with lauric acid or myristic acid, and their biological activities were improved by blending them with Sr0.25Co0.75Fe2O4 nanoparticles. The Sr0.25Co0.75Fe2O4 nanoparticles were prepared by the chemical co-precipitation method. These prepared polymeric surfactants were investigated using Fourier transformer infrared spectroscopy (FT-IR), Transmission Electron Microscope (TEM) and diffraction of Xray (XRD). Also, the surface tension was characterized at diverse temperatures for these compounds. In addition, the surface parameters as well as concentration of critical micelle (CMC), excess of maximum surface (Γmax), area of minimum surface (Amin), efficiency (Pc20) and effectiveness (πCMC) were measured and computed. It was assessed and assigned the biological activity of these designed surfactants through length of the field of the hindrance against different microorganisms. It was found as of the results, that these compounds have good surface properties and good biological activity by blending these prepared polymeric surfactants with Sr0.25Co0.75Fe2O4 to obtain polymeric surfactants nanocomposites for enhancing their biological activity.

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