Yazar "Özcan, E." seçeneğine göre listele

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  • Küçük Resim
    Öğe
    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.
  • Küçük Resim
    Öğe
    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.
  • Küçük Resim
    Öğe
    Structural characterization and second-order nonlinear optical behavior of metal complexes of ferrocene derivative
    (MAIK NAUKA/INTERPERIODICA/SPRINGER, 2019) Deveci, P.; Taner, B.; Özcan, E.; Kılıç, Z.; Karakaya, M.; Karakas, A.
    In this manuscript, a ferrocene-linked vic-dioxime ligand (LH2) and its metal complexes [Ni(LH)(2), Cu(LH)(2), Co(LH)(2)(H2O)(2), Cd(LH)(H2O)(Cl), and Zn(LH)(H2O)(Cl)] are synthesized, and their structures are studied by spectral methods. Redox behavior of the compounds is studied by cyclic voltammetry (CV). For approaching microscopic second-order nonlinear optical (NLO) behavior of the synthesized ligand and its diamagnetic Cd(II), Zn(II), Ni(II) complexes, the electric dipole moment , static dipole polarizability , and first hyperpolarizability values are computed using ab-initio quantum chemical procedure [finite field (FF)]. The accumulated data indicate that the compounds exhibit non-zero quadratic hyperpolarizability tensor components, implying microscopic NLO phenomena. The HOMOs, LUMOs and the HOMOLUMO band gaps for first and second frontier orbitals of LH2 ligand and its Cd(II), Zn(II), Ni(II) complexes are evaluated by means of the Hartree-Fock (HF) method.