Characterization and dual functionalization of polystyrene with propionic anhydride and cyanate derivatives

摘要: First, Friedel–Crafts reactions were used for the acylation process. For this, polystyrene (PS) was reacted with propionic anhydride in presence of Lewis acid catalyst. The amount acyl group linked PS as a result has been identified volumetric. Second, bromination and lithiation acylated containing carbonyl groups realized. Also, lithiated modified second time various isocyanates isothiocyanate derivatives n‒BuLi Some important reaction parameters assigned order to optimize structure all products characterized by Fourier transform infrared, 1H NMR (Proton Nuclear Magnetic Resonance), thermogravimetric methods. In addition, yields determined according elemental analysis. Dual functionalization realized between 62.2% 69.9%. kinetic analysis, TG/DTG (Thermal Gravimetric Analysis/Differantial Thermal Analysis) data obtained at three different heating rates processed Kissinger–Akahira–Sunose method. results demonstrated that reaction, reactions, dual cyanate can be carried out obtain significantly functionalized polymer. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 1351-1362,