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    Adhesion and Corrosion Resistance Properties of Coatings Obtained From Modified Low-Molecular-Weight Polystyrenes
    (Taylor & Francis Ltd, 2006) Ahmetli, Gülnare; Kocak, A.; Sen, N.; Kurbanlı, R.
    In this study, as a continuation of our previous studies, chemical modification of low-molecular-weight polystyrenes (PSs) was carried out with various functional group modifiers: epichlorohydrin (ECH), maleic anhydride (MA) and acetic anhydride (AA), in a single stage using a cationic catalyst. It was determined that the amounts of the functional groups bound to the structure of the polymer depended on the molecular weight of the polymer used, and more functional groups were bound to the lower-molecular-weight PSs. It was found that the coating properties (adhesion properties and resistance to aggressive conditions) of the functional group containing PS to the metal surface depended on the structure and the amount of the functional groups bound to the aromatic ring of the polymer. In addition, it was observed that the PS modified with MA and ECH having carboxyl- and epoxy-groups in their aromatic rings had higher adhesion, as well as higher corrosion resistance properties. Various functional groups bound to the aromatic ring of the polystyrene and their amounts were determined by spectral and chemical analysis methods.
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    A COMPARATIVE STUDY OF THE FATTY-ACID COMPOSITION OF Sesamum indicum OIL OBTAINED FROM DIFFERENT PROVINCES IN TURKEY
    (SPRINGER, 2011) Citil, O. B.; Tulukcu, E.; Kocak, A.
    [Abstract not Available]
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    Synthesis of alkyl nitrones by reaction of aldehyde and ketone oximes with alpha,beta-unstaturated esters in the presence of Lewis acid
    (MAIK NAUKA/INTERPERIODICA/SPRINGER, 2009) Kocak, A.; Malkondu, S.; Kurbanli, S.
    Reactions of pyridinecarbaldehyde oximes, methyl pyridyl ketone oximes, furfural oxime, cinnamaldehyde oxime, and crotonaldehyde oxime with acrylic and methacrylic acid esters in the presence of a Lewis acid catalyst at room temperature followed the conjugate addition pattern to give the corresponding alkyl nitrones in good yield. The best yields were obtained using a 1: 1 mixture of CdI(2) and BF(3) center dot Bu(2)O as catalyst.