Publications
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Recent Publications
Da Huang, Thorsten Hugel, and Günter Reiter. Macromolecules, published online
We have investigated the formation of millimeter-long filaments induced by spin-coating ca. 130 °C dilute para-xylene solutions of rapidly crystallizable polyethylene chains with a contour length in the micrometer range onto ca. 80 °C mica substrates. These filaments were radially oriented and accumulated on the periphery of the substrate. Our observations can be explained by the stretching of polymers through the flow field induced by spinning the solution on a solid substrate. The corresponding loss in conformational entropy emphasized attractive interactions between polymers, which resulted in the formation of bundles and their assembly into long filaments. Caused by a Plateau–Rayleigh-type instability of a liquid coating on a solid filament and due to crystallization, these filaments were decorated with various small-scale structures. (more...)
Mina Alizadehaghdam, Farhang Abbasi, Günter Reiter. J. Phys. Chem. C 128 (2024) 4757–4765
Crystallization of poly(3-hexylthiophene) (P3HT) was studied in mixtures of different concentrations of 3-hexylthiophene (3HT) as a diluent. Two coexisting crystal populations, socalled “thin” and “thick” crystals, with melting temperatures differing by more than 10 °C were observed in these mixtures. Intriguingly, the “thick” crystals represented transient unstable structures, with a mass fraction that was the highest ФH for rapidly crystallized P3HT in presence of significant amount of diluent. Reflecting its dependence on growth kinetics, ФH decreased with increasing crystallization temperature, extended crystallization time or lower cooling rate. The presence of a diluent led to a “depression” of the melting temperature, described by Raoult’s law and the Flory equation, which was similar for P3HT samples crystallized in various ways. (more...)
Claas-Hendrik Stamp, Binyam Solomon, Friederike Lang, Efstathios Mitropoulos and Thomas Pfohl.
Lab Chip 23 (2023) 3662-3670
Controlling fluid flow in microfluidic devices and adapting it to varying conditions by selectively regulating hydrodynamic properties is of critical importance, as the field of microfluidics faces increasingly complex challenges in its wide range of applications. One way to manipulate flows in microfluidic devices is to introduce elastic elements that can be actively or passively deformed. In this work, we developed a membrane-based microfluidic device that allows us to study the deformation of swollen thin membranes as a function of the volume fractions in binary mixtures – here isopropanol and water. (more...)
List of Publications
- Small-Angle X-Ray-Scattering Study of Spinodal Decomposition in Polystyrene Poly(styrene-co-bromostyrene) Blends
- H. Meier, G.R. Strobl. Macromolecules 20, 649-654 (1987)
- Surface Melting in Melt-Crystallized Linear Polyethylene
- Y. Tanabe, G.R. Strobl, E.W. Fischer. Polymer 27, 1147-1153 (1986)
- Thermally Reversible Phase Separation in Polystyrene Poly(styrene-co-4-bromostyrene) Blends
- G.R. Strobl, J.T. Bendler, R.P. Kampour, A.R. Shultz. Macromolecules 19, 2683-2689 (1986)
- Structure Evolution during Spinodal Decomposition of Polymer Blends
- G.R. Strobl. Macromolecules 18, 558-563 (1985)
- Dielectric Relaxation of Liquid Crystalline Polyacrylates and Polymethacrylates
- R. Zentel, G.R. Strobl, H. Ringsdorf. Macromolecules 18, 960-965 (1985)
- Structures of Liquid Crystalline Side Group Polymers Oriented by Drawing
- R. Zentel, G.R. Strobl. Makromolekulare Chemie - Macromolecular Chemistry and Physics 185, 2669-2676 (1984)
- Molecular-Motion, Defect Structures and Phase-Transitions in Oligomer Crystals
- G.R. Strobl, H. Schwickert, T. Trzebiatowski. Berichte der Bunsen-Gesellschaft - Physical Chemistry Chemical Physics 87, 274-279 (1983)
- Crystallization and Melting of Fractions of Branched Polyethylene. 2. Dilatometric and Small-Angle X-Ray-Scattering Study on the Molecular Weight Dependence of Isothermal Crystallization
- E. Maderek, G.R. Strobl. Coll. Polym. Sci. 261, 471-476 (1983)
- Effect of Amorphous Sequences on the Longitudinal Acoustic Modes in Partially Crystalline Polymers. 1. Transfer Matrix Method
- G.R. Strobl. J. Polym. Sci. B - Polymer Physics 21, 1357-1380 (1983)
- On the Kinetics of Isothermal Crystallization of Branched Polyethylene
- G.R. Strobl, T. Engelke, E. Madarek, G. Urban. Polymer 24, 1585-1589 (1983)
- Kristallisation und Schmelzverhalten von Fraktionen verzweigten Polyethylens. 1. Darstellung und Charakterisierung der Fraktionen
- Eugeniusz Maderek, Gert R. Strobl. Makromolekulare Chemie - Macromolecular Chemistry and Physics 184, 2553-2561 (1983)
- Raman Spectrum of the High Pressure Phase of Polyethylene
- R. Eckel, H. Schwickert, M. Buback, G.R. Strobl. Polymer Bulletin 6, 559-564 (1982)
- Die Kristallstruktur von Cycloalkanen
- Thomas Trzebiatowski, Martin Dräger, Gert R. Strobl. Makromolekulare Chemie - Macromolecular Chemistry and Physics 183, 731-744 (1982)
- Zum Mechanismus der Polymerkristallisation
- G. R. Strobl, T. Engelke, H. Meier, G. Urban. Coll. Polym. Sci. 260, 394-403 (1982)
- Pressure induced changes in the Raman spectra of liquid n-alkanes and perfluoro-n-alkanes
- H. Schwickert, G. R. Strobl and R. Eckel. Coll. Polym. Sci. 260, 588-593 (1982)
- Untersuchung der druckinduzierten Kristallisation von Polyäthylen mit Hilfe einer neuen Raman-Hochdruckzelle
- R. Eckel, M. Buback und G. R. Strobl. Coll. Polym. Sci. 259, 326-334 (1981)
- Model of Partial Crystallization and Melting Derived from Small-Angle X-Ray-Scattering and Electron-Microscopic Studies on Low-Density Polyethylene
- G.R. Strobl, M.J. Schneider, I.G. Voigt-Martin. J. Polym. Sci. B - Polymer Physics 18, 1361-1381 (1980)
- Direct Evaluation of the Electron Density Correlation Function of Partially Crystalline Polymers
- G.R. Strobl, M. Schneider. J. Polym. Sci. B - Polymer Physics 18, 1343-1359 (1980)
- Analysis of the Intensities of the Longitudinal Acoustic Vibtrations in n-Alkanes and Polyethylene
- G.R. Strobl, R. Eckel. Coll. Polym. Sci. 258, 570-577 (1980)
- Phase-Transitions in Crystals of Chain Molecules. Relation between Defect Structures and Molecular Motion in the four Modifications of n-C33H68
- B. Ewen, G.R. Strobl, D. Richter. Faraday Discussions 69, 19-31 (1980)