Microwave-assisted simultaneous novel synthesis of poly(dibromophenylene oxide)s, poly(diiodophenylene oxide)s (p), conducting(cp) and/or crosslinked (clp) and/or radical ion polymers (rip)

Download

index.pdf

Date

2007

Author

Çelik, Güler Bayraklı

Metadata

Show full item record

Item Usage Stats

118
views

55
downloads

Microwave-assisted novel synthesis of poly(dibromophenylene oxide) or poly(diiodophenylene oxide) (P), conducting polymer (CP) and/or crosslinked polymer (CLP) and/or radical ion polymer (RIP) were achieved simultaneously from lithium, sodium or potassium 2,4,6-bromophenolate or sodium 2,4,6-iodophenolate in a very short time interval. Polymerizations were carried out by constant microwave energy with different time intervals varying from 1 to 20 min; or at constant time intervals with variation of microwave energy from 70 to 900 watt; or varying the water content from 0.5 to 5 ml at constant time intervals and microwave energy. Poly(dihalophenylene oxide) and radical ion polymers were characterized by FTIR (Fourier Transform Infrared), 1H-NMR (Proton Nuclear Magnetic Resonance), 13C-NMR (Carbon-13 Nuclear Magnetic Resonance), TGA/ FTIR (Thermal Gravimetric Analysis / Fourier Transform Infrared), DSC (Differential Scanning Calorimeter), SEM (Scanning Electron Microscope), ESR (Electron Spin Resonance), GPC (Gel Permeation Chromatography), UV-Vis (UV-Visible Spectroscopy), Light Scattering and Elemental Analysis. Conducting and crosslinked polymers were characterized by FTIR, TGA/ FTIR, DSC, SEM, ESR, XRD (Powder Diffraction X-Ray) and Elemental Analysis. The effects of heating time, microwave energy and water content on the percent conversion and the polymer synthesis were also investigated.

Subject Keywords

Polymers., Macromolecules.

URI

http://etd.lib.metu.edu.tr/upload/12608296/index.pdf
https://hdl.handle.net/11511/17197

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Synthesis, characterization, and polymerization of polyether bridged thiophene and aniline derivatives Tirkeş, Seha; Önal, Ahmet Muhtar; Department of Polymer Science and Technology (2008) New compounds consisting of 3-thienyl and aniline units linked by polyether bridges have been synthesized and their electrochemical polymerization was performed via constant potential electrolysis and cyclic voltammetry. In the case of 3-thienyl derivatives two compounds, 1,12-di-3-thienyl-2,5,8,11-tetraoxadodecane (MI) and 1,15-di-3-thienyl-2,5,8,11,14-pentaoxapentadecane (MII) were synthesized utilizing literature methods and their corresponding polymers, poly(I) and poly(II) were prepared in an electroly...
Polyaniline: synthesis characterization solution properties and composites Yılmaz, Faris; Küçükyavuz, Zuhal; Department of Polymer Science and Technology (2007) Polyaniline was chemically synthesized at three different temperatures of 25, 0, and -25oC, by oxidative polymerization with ammonium peroxidisulfate at equimolar of aniline to oxidant ratio and 1M HCl. The resulted polyaniline was in a powder form which was characterized by several techniques such as: electrical conductivity, elemental analysis, thermal analysis, wide-angle X-Ray diffraction, and scanning electron microscope. The solution properties of the reduced polymer were studied by viscometry, static...
Polymerization and polymer characterization of acetylenedicarboxylic acid monopotassium salt Anaçoğlu, Elif; Usanmaz, Ali; Department of Polymer Science and Technology (2005) Acetylenedicarboxylic acid monopotassium salt, ADCA-K, was polymerized by radiation induced solid-state and chemical initiator induced solution polymerization methods. Radiation induced solid-state polymerization was carried out by Co-60 g-radiation at room temperature. The powder polymer obtained was soluble in water but insoluble in common organic solvents. The solution polymerization initiated by benzoylperoxide was carried out in an oil bath at 90°C. The polymer obtained was soluble in water but insolub...
Synthesis and characterization of polythiophene/montmorillonite and polythiophene/polypropylene composites Dülgerbaki, Çiğdem; Küçükyavuz, Zuhal; Department of Chemistry (2006) In this study, polythiophene(PTP)/montmorillonite(MMT) nanocomposites were synthesized by in situ intercalative polymerization and chemical oxidative polymerization. In in situ intercalative polymerization method, composites containing 90 and 95% MMT were prepared. In chemical oxidative polymerization method, a series of composites ranging from 1 to 15% by weight MMT were synthesized. Thermal and morphological properties of samples were investigated by Differential Scanning Calorimeter (DSC), Thermal Gravim...
Effect of polymer additives on the physical properties of bitumen based composites Doğan, Mehmet; Bayramlı, Erdal; Department of Polymer Science and Technology (2006) Polymer modified bitumen is a binder obtained by the incorporation of various types of polymers in bitumen using mechanical mixing or chemical reactions. There are several factors affecting the properties of polymer modified bituminous composites such as; chemical composition of bitumen, kind of polymer and filler, compatibility of bitumen and polymer, amount of bitumen, polymer and filler, particle size of filler and process conditions. The main objective of this study is to determine the effects of polyme...

Citation Formats

G. B. Çelik, “Microwave-assisted simultaneous novel synthesis of poly(dibromophenylene oxide)s, poly(diiodophenylene oxide)s (p), conducting(cp) and/or crosslinked (clp) and/or radical ion polymers (rip),” Ph.D. - Doctoral Program, Middle East Technical University, 2007.