Characterization of p-t-butylstyrene-dimethylsiloxane triblock copolymers in solution

Küçükyavuz, Savaş
Küçükyavuz, Zühal
Erdoǧan, Günseli
Anionically synthesized poly(p-t-butylstyrene)-b-poly(dimethylsiloxane)-b-poly(p-t-butylstyrene) block copolymers containing about 28% by weight p-t-butylstyrene were characterized by using differential refractometry, light scattering and viscosity methods in a good solvent, benzene, and in a selective solvent, methyl ethyl ketone. The unperturbed chain dimensions were estimated. Results were discussed with regard to the conformation of block copolymers in solution.


SEN, S; KISAKUREK, D (Elsevier BV, 1993-01-01)
Electroinitiated polymerization of bis(2,4,6-trichlorophenoxo)bis(pyridine)copper(II) complex was achieved in dimethylformamide by constant potential electrolysis under air and N2. The polymers obtained at several potentials were characterized by H-1 n.m.r., C-13 n.m.r., FTi.r. and d.s.c., and were found to be branched. The kinetics of the polymerization were followed by in situ cyclic voltammetry measurements at 13.5 and 20-degrees-C during electrolysis. As found for the thermal polymerization of this comp...
Thermal polymerization of bis(4-fluoro-2,6-dibromophenolato)bis(pyridine)copper(II) complex in solution and in solid state
Kisakurek, D; Akbas, M; Bilir, N (Wiley, 1998-02-01)
The synthesis of the bis(4-fluoro-2,6-dibromophenolato)bis(pyridine)copper(II) complex was achieved from aqueous solution, and its characterization was performed by means-of IR and CHN elemental analysis. Thermal polymerization of this complex was carried out in toluene and in solid state. The structural analysis of the polymers was performed with H-1 NMR, C-13 NMR and FTIR analysis; the glass transition temperature was found to be at 160 degrees C. 4-Fluoro-2,6-dibromophenolate, with the non-chelating liga...
Synthesis and characterization of boron-doped Bi2O3-La2O3 fiber derived nanocomposite precursor
Durmusoglu, Senol; Uslu, Ibrahim; TUNÇ, TUNCAY; Keskin, Selda; Aytimur, Arda; Akdemir, Ahmet (Springer Science and Business Media LLC, 2011-11-01)
Boron doped poly(vinyl) alcohol/ bismuth - lanthanum acetate (PVA/Bi-La) nanofibers were prepared by electrospinning using PVA as a precursor. The effect of boron doping was investigated in terms of solution properties, morphological changes and thermal characteristics. The fibers were characterized by FT-IR, XRD, SEM and BET. The addition of boron did not only increase the thermal stability of the fibers, but also their diameters, which yielded stronger fibers. XRD analyses showed that boron doping increas...
Synthesis and electropolymerization of 5,12-dihydrothieno[3 ',4 ': 2,3][1,4]dioxocino[6,7-b]-quinoxaline and its electrochromic properties
Ak, Mine Sulak; Ak, Metin; Guellue, Mustafa; Toppare, Levent Kamil (Elsevier BV, 2007-08-01)
Synthesis of a new thiophene-based monomer; 5,12-dihydrothieno[3',4':2,3][1,4]dioxocino[6,7-b]quinoxaline (DDQ), was realized. The chemical structure of the monomer was characterized by H-1 NMR, FTIR and mass spectroscopy techniques. Electrochemical polymerization of DDQ and characterization of the resulting polymer [P(DDQ)] was performed. Moreover, the spectroelectrochemical and electrochromic properties of the polymer film were investigated. P(DDQ) has a low oxidation potential (0.9 V) and low band gap (1...
Enhancing electrochromic properties of polypyrrole by silsesquioxane nanocages
Ak, Metin; Gacal Özcan, Burçin; Kışkan, Barış; Yağcı, Yusuf; Toppare, Levent Kamil (Elsevier BV, 2008-04-29)
A new monomer, octa(thiophenephenyl)silsesquioxane (OThiophenePS) was synthesized via click chemistry. The chemical structure of OThiophenePS was characterized by nuclear magnetic resonance (H-1 NMR) and Fourier transform infrared (FT-IR) spectroscopies. Electrochemical polymerization of pyrrole with OThiophenePS was performed resulting in polypyrrole-attached, polyhedral oligomeric silsesquioxane (OPS-PPy). The spectroelectrochemical studies show that the electrochromic properties of (OPS-PPy) are superior...
Citation Formats
S. Küçükyavuz, Z. Küçükyavuz, and G. Erdoǧan, “Characterization of p-t-butylstyrene-dimethylsiloxane triblock copolymers in solution,” Polymer, pp. 379–382, 1990, Accessed: 00, 2020. [Online]. Available: