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BİRTANE, HATİCE

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Author: ARMAN KANDIRMAZ, EMİNE × Has files: false ×

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    Thermal, optical and electrical properties of UV-curing screen-printed glass substrates
    (SPRINGER, 2019) ARMAN KANDIRMAZ, EMİNE; Cigil, Asli Beyler; Kandirmaz, Emine Arman; Birtane, Hatice; Kahraman, Memet Vezir
    In this study, the hydroxyl functionality of the polyaniline surface was obtained using hydroxyethyl methacrylate and acrylated with isocyanatoethyl methacrylate. Coating formulation being curable with UV was designed by mixture of acrylated PANI (a-PANI) (0-5wt%), polyethylene glycol diacrylate, trimethylolpropane triacrylate, hydrolyzed 3-(methacryloxy) propyl trimethoxysilane (hydMEMO) and photoinitiator. The hybrid composite formulation has been printed on the glass surface with the method of screen printing. The chemical structure and the properties of thermal, electrical and surface obtained products were determined with ATR-FTIR, goniometer, current-voltage meter, scanning electron microscopy (SEM) and thermogravimetric analysis. ATR-FTIR results have shown that all materials were clearly produced. SEM results have revealed that PANI was dispersed at the composite in a stable manner. The conductivity value of the conductive line printed with F5a-PANI was found to be 3.7x10(-3)S. The best electrical results have presented that PANI has been beneficial for conductive line, and thus, screen printing was a convenient method for printing conductive lines.
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    pH-controlled lavender oil capsulation with ABA-type block copolymer and usage in paper coating
    (WILEY, 2020) ÖZCAN, ARİF; Kandirmaz, Emine Arman; Birtane, Hatice; Cigil, Asli Beyler; Ozcan, Arif
    The aim of this study is to produce a lavender oil capsules with triblock copolymer and to use these capsules for providing scented paper. Thus, polyethylene oxide-polypropylene glycol-polyethylene oxide (PEO-b-PPG-b-PEO) ABA-type block copolymer was synthesized by means of Atom Transfer Radical Polymerization and the chemical structure of PEO-b-PPG-b-PEO was characterized by ATR-FTIR and H-1-NMR. Moreover, block ratio of the PEO-b-PPG-b-PEO was identified with H-1-NMR. Lavender oil was encapsulated in the polymer by micellization of interactions between hydrophilic-lipophilic-hydrophilic polymer and oil. These interactions include lavender oil and lipophilic block interaction and oil-hydrophilic group repulsion. In addition, hydrophilic groups interacted with water to keep the micelles suspended. The critical micelle concentration and size of the micelles were analysed with SEM. Decomposition of capsules was determined by UV spectroscopy with respect to pH change. Paper coating formulations were prepared with fragrant capsules and coated on paper with laboratory-type coating machine. The colour and gloss of obtained papers were determined by spectrophotometer and glossmeter. As a result, PEO-b-PPG-b-PEO polymer can be used to encapsulate lavender oil, and the resulting capsules have functioned without degradation in the paper coating.