Synthesis of Poly (2-Acrylamido-2-methylpropanesulfnoinc Salt) Modified Carbon Spheres

The paper reports a facile synthesis of novel anionic spherical polymer brushes which was based on grafting sodium 2-acrylamido-2-methylpropane-1-sulfonate from the surface 4,4′-Azobis (4-cyanopentanoyl chloride)-modified carbon spheres. Various characterization methods involving scanning electron microscope, energy dispersive X-ray spectroscopy, Fourier transform infrared spectrum, and thermo-gravimetric analysis were utilized to analyze morphology, chemical composition, bonding structure, thermal stability, respectively. molecular weight (Mw) polydispersity (Mw/Mn) 616,000 g/mol 1.72 determined by gel permeation chromatography experiments. Moreover, dispersibility ASPB in water presence aqueous NaCl solutions different concentrations investigated. Results show that spheres has been enhanced owing grafted polyelectrolyte chains, while zeta potential particle decreases its brush layer shrinks upon exposure ions (Na+).