Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Wolfram Gronski"'
Publikováno v:
Polymer. 48:3925-3929
Mesostructurally ordered inorganic–organic hybrid composite materials were successfully synthesized by utilizing a low-molecular-weight amphiphilic polyethylene-block-poly(ethylene oxide) (PE–PEO) diblock copolymer as the directing agent. The hyb
Morphological development and rheological changes of phenoxy/SAN blends duringin-situ polymerization
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 45:2614-2619
This article reports the results of an investigation into the time-dependent morphological and rheological changes that accompany the in-situ polymerization of blends composed of poly(hydroxyether of bisphenol A) (phenoxy) and poly(styrene-co-acrylon
Publikováno v:
Macromolecules. 39:8854-8861
Dielectric relaxation in a liquid crystalline (LC) side chain polymer and in a series of diblock copolymers with polystyrene is investigated using dielectric spectroscopy. The block copolymer morphology is cylindrical with the LC block forming the co
Autor:
Ralf Thomann, Alejandra Garcia Marcos, Thomas Pusel, Steffen Geppert, Lidia Okrasa, Wolfram Gronski, Tadeusz Pakula, Holger Frey
Publikováno v:
Macromolecules. 39:971-977
A general strategy for the preparation of well-defined diblock copolymers combining a random cascade-branched dendritic (i.e., hyperbranched) and a linear block has been developed. The strategy is based on a linear poly(styrene-b-butadiene) (PS-b-PB)
Publikováno v:
European Polymer Journal. 41:3042-3050
Polychloroprene/organoclay nanocomposites (ENC) were characterized by X-ray scattering, DSC and stretching calorimetry techniques. The infinite cluster of highly anisometric organoclay particles was likely to set on at filler volume fraction as low a
Autor:
Bernd Stühn, Rosina Staneva, Wolfram Gronski, Barbara Heck, Rouja Ivanova, Steffen Geppert, Bernd Walter
Publikováno v:
Colloid & Polymer Science. 282:810-824
The domain microstructure and the nematic LC mesophase in a series of side-chain liquid crystalline/isotropic (LC/I) diblock copolymers with systematically varied block volume fractions were studied in a broad temperature range (25–170 °C) by DSC,
Publikováno v:
Macromolecular Theory and Simulations. 13:365-373
The effects of viscosity asymmetry of the components on morphology and dynamics of phase-separating AB fluids are investigated numerically based on a modified Model H. For critical mixtures, in the early stage of phase separation the co-continuous mo
Publikováno v:
Journal of Macromolecular Science, Part B. 43:1231-1242
Melt‐compounded composites of synthetic styrene‐co‐butadiene rubber (BUNA SL18) and silica particles (Silica VN3, Degussa) were characterized by wide‐angle and small‐angle x‐ray diffraction and stretching calorimetry. At low elongations,
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 42:1767-1782
Conductive elastomeric blends based on ethylene–propylene–5-ethylidene–2-norbornene terpolymer (EPDM) and polyaniline doped with 4-dodecylbenzenesulfonic acid [PAni(DBSA)] were cast from organic solvents. Functionalization of the elastomer was
Publikováno v:
Macromolecules. 36:6166-6170
The effect of nanoscale confinement on the local polymer dynamics has been studied by means of dielectric spectroscopy in the frequency range from 10 mHz to 1 MHz. We have used microphase-separated PS/LC block copolymers (PS = polystyrene, LC = liqui