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...
Synthesis and characterization of fluorine-substituted polyanilines
Cihaner, A; Önal, Ahmet Muhtar (Elsevier BV, 2001-09-01)
Poly(2-fluoroaniline), P2FAN, poly(3-fluoroaniline). P3FAN. and poly(4-fluoroaniline), P4FAN, have been synthesized from fluorine substituted aniline monomers in aqueous acidic medium using potassium dichromate as oxidizing agent. Characterization of polymer products has been carried out using FTIR, and NMR spectroscopic techniques. Thermal analysis of polyfluoroaniline powders was also investigated using differential scanning calorimetry and thermogravimetric analysis. To compare the structural properties ...
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...
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 poly(dihalophenylene oxides) by thermal decomposition of copper complexes with tetramethylethylenediamine and ethylenediamine ligands
Ünal, H. Ibrahim; Kısakürek, Duygu; Şanlı, Oya (Elsevier BV, 1989-2)
Thermal polymerization of bis(trihalophenoxo)-N,N,N′,N′-tetramethylethylenediamine copper(ii) and bis(trihalophenoxo)ethylenediamine copper(ii) was achieved in toluene at 70°C. The dependences of intrinsic viscosity and the percentage yield of the polymers on a sequence of increasing decomposition times of copper complexes were investigated. Structural analyses of the polymers were carried out using mainly1H nuclear magnetic resonance spectroscopy and differential scanning calorimetry. 1,4-Catenation was hi...
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: