Study of some physical properties of condensation product and acylation of polystyrene presence of lewis acid catalyst

ABSTRACT In this study, some physical and mechanical properties of modify polystyrene and condense-modify polystyrene that synthesised from maleic anhydride and condensation of modify polystyrene with phenyl hydrazine were investigated. The block polystyrene having the molecular weight of 2.5 105 g/mol was first modified with maleic anhydride in the presence of boron trifluoride dietyhletherade as a catalyst and then condensation reaction was carried out with phenyl hydrazine. The optimum reaction conditions of both products were determined. The polymers were characterised by using FT-IR, 1H-NMR, and elemental analysis techniques. Some physical parameters of products were calculated such as molecular weight, density, refraction index, coverage properties (adhesion and corrosion), solubility parameter, conversion percents, activation energy of degradation, glassy and sorting temperatures Key words : condensation, thermal analysis, physical property, polystyrene, adhesion, corrosion, degradation activation energy II