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    Effects of the Functional Groups of Polystyrene on Its Adhesion Improvement and Corrosion Resistance
    (VSP BV, 1998) Kurbanova, R.; Okudan, A.; Mirzaoğlu, R.; Kurbanov, S.; Karataş, İ.; Ersöz, M.; Özcan, E.; Ahmedova, G.; Pamuk, V.
    Novel functionalized polystyrenes having groups such as epichlorohydrin, epoxy, acetyl, C=C double bond, and carboxyl were synthesized by the reaction of polystyrene with epichlorohydrin, unsaturated hydrocarbons, and organic anhydrides in the presence of Lewis acid catalysts. The adhesion capability and corrosion resistance of the new synthesized functionalized polystyrenes to metals under various conditions were investigated. 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 polyfunctionalized polystyrenes. It was also observed that the new polyfunctionalized polystyrenes obtained by chemical modification with maleic anhydride, acetic anhydride, isoprene, butadiene, and epichlorohydrin in the presence of cationic catalysts resulted in high adhesion and anti-corrosion properties.
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    Fractionation effects of polystyrene on acylation reaction and their adhesive and corrosive properties
    (SPRINGER, 2013) Okudan, A.; Sinan, F.
    First, polystyrene (PS) was fractionated using solvent-precipitation methods; then the chemical modification of PS was investigated in the presence of Lewis acid [BF3 center dot O(C2H5)(2)] catalyst with some anhydrides such as phthalic anhydride, glutaric anhydride, maleic anhydride, and propionic anhydride. The amount of the polyfunctional groups bonded to polymer structures changed depending on the molecular weight of the polymer, and more functional groups connected to the highest-molecular-weight fraction. The amount of the bonded functional groups was determined with the chemical analysis method. The structures of PS functionalized with anhydrides were confirmed by FTIR, H-1 NMR, and thermogravimetric studies. Their adhesion capability and corrosion resistance against metals have been investigated under various conditions. The results showed that the addition of functional groups to PS increases its adhesion capability and corrosion resistance. This increase is attributed to the quantity of the functional groups bonded to PS.
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    Functionalization of Polystyrene and Adhesion Studies
    (VSP BV, 1997) Kurbanova, R. A.; Mirzaoğlu, R.; Kurbanov, S.; Karataş, I.; Pamuk, V.; Özcan, E.; Okudan, A.; Güler, E.
    The adhesion capability of novel functional polystyrenes to metals and their capability to provide corrosion resistance to metals under various conditions have been investigated. The polyfunctional polystyrenes were prepared via reaction of the polystyrene with different functional groups [2-methyl-2,3-epoxy-6-octene-4-one (I), 2-methyl-2, 3-epoxy-5,7-nonadien-4-one (II), 1-chloro-2,3-epoxy-5-chloromethyl-5-hexene (III), 1-(Delta(3)-tetrahydrobenzaldoxime)-2,3-epoxy propane (IV), and maleic anhydride (V)] in the presence of catalysts. The results show that the addition of functional groups to the polystyrene increases its adhesion capability and corrosion resistance. This increase is attributed to the quantity and nature of the functional groups bonded to polystyrene.
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    Functionalization of Polystyrene with Cyclic Anhydrides and Their Spectroscopic, Adhesive and Corrosive Characterizations
    (Carl Hanser Verlag, 2012) Önder, I. L.; Okudan, A.
    Polystyrene (PS) has been chemically modified with cyclic anhydrides such as glutaric anhydride (GA), citraconic anhydride (CA) and phthalic anhydride (PA) in the presence of BF3 center dot O(C2H5)(2) in chloroform and succinic anhydride (SA) in 1,2-dichloroethane. Some important reaction parameters were determined in order to optimize the acylation process. ATR FT-IR and H-1 NMR studies indicate that the acylation reaction can introduce both carboxyl group and double bond (for only citraconic anhydride) onto pendant aromatic groups of the polymer. The adhesion properties and corrosion resistance of the acylated PS on metal surface under various conditions have been investigated.