EFFECTS OF THE FUNCTIONAL-GROUPS OF POLYSTYRENE ON ITS ADHESION IMPROVEMENT AND CORROSION-RESISTANCE

Novel functionalized polystyrenes having groups such as epichlorohydri n, epoxy, acetyl, C=C double bond, and carboxyl were synthesized by th e reaction of polystyrene with epichlorohydrin, unsaturated hydrocarbo ns, and organic anhydrides in the presence of Lewis acid catalysts. Th e adhesion capability and corrosion resistance of the new synthesized functionalized polystyrenes to metals under various conditions were in vestigated. A very good relationship was observed between the quantity of functional groups bonded to the aromatic rings of the polystyrenes and the adhesion and corrosion resistance properties of the polyfunct ionalized polystyrenes. It was also observed that the new polyfunction alized polystyrenes obtained by chemical modification with maleic anhy dride, acetic anhydride, isoprene, butadiene, and epichlorohydrin in t he presence of cationic catalysts resulted in high adhesion and anti-c orrosion properties.