Radical copolymerization of behenyl (systematic IUPAC nomenclature: n-docosyl) acrylate and behenyl fumarate has been carried out in toluene at 70°C using benzoyl peroxide as initiator. Gel permeation chromatography was used to determine molecular weights (MW) and molecular weight distribution (MWD) of behenyl acrylatebehenyl fumarate (BA-BF) copolymers.1 H NMR and carbon analysis was used to determine the composition of BA-BF copolymers. Monomer reactivity ratios for high conversion polymerization were calculated by conversion-extended Kelen-Tudos plot. Differential scanning calorimetric (DSC) measurements shows sharp melting peaks at about 64°C. Thermal stability studies were performed with thermogravimetric analyzer (TGA). By using these DSC and TGA data in several nonisothermal methods, the activation energies were calculated. X-ray diffraction studies show the linearity of the copolymers.
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