Veröffentlichungen
Nach Erscheinungsjahr...
| 2016-2018 | 2019-2021 | 2022-2024 | 2025 |
| 2004-2006 | 2007-2009 | 2010-2012 | 2013-2015 |
| bis 1990 | 1991-1995 | 1996-2000 | 2001-2003 |
... oder nutzen Sie die
Neueste Veröffentlichungen
Binghua Wang, Hailong Zou, Xuchen Wang, Changyu Shen, Jingbo Chen, Günter Reiter, Bin Zhang. Nature Communications 16 (2025) 3275
The dissolution of polymer crystals often proceeds at rates varying in time and space. Here, using low molecular weight poly(ethylene oxide) as a model polymer, we exploit step-wise selective dissolution for unveiling how spatial variations in metastability are generated during the growth of lamellar polymer single crystals. The dissolution velocity along defined crystal faces is constant, but ca. 5 times faster for rough than for smooth faces. From the temperature dependence of dissolution, we derive detachment energies of 420 ± 40 kJ/mol and 650 ± 50 kJ/mol for rough and smooth faces, respectively, suggesting that on a rough face polymer chains have ca. 1/3 less neighboring molecules to interact with. The observed high values of the activation energy indicate that, for dissolving a polymer crystal, the progressive detachment of whole chains is indispensable. Our study reveals a strong relation between growth kinetics and the resulting metastability of polymer crystals. (more...)
Baode Zhang, Snežana D. Zarić, Sonja S. Zrilić, Iosif Gofman, Barbara Heck, Günter Reiter. Communications Chemistry 8 (2025) 21
The interplay between attractive London dispersion forces and steric effects due to repulsive forces resulting from the Pauli principle often determines the geometry and stability of nanostructures. Aromatic polyimides (PI) and carbon nanotubes (CNT) were chosen as building blocks as two components in the hetero delocalized electron nanostructures. Two PIs, having the same diamine part and different linkage substituents between two phenyl rings of dianhydride part, one linked with ether bond (C-O-C) (OPI), the other with C-(CF3)2 (FPI), were investigated. Surprisingly, two CNT/PI nanocomposites show distinct failure mode from CNT yielding to CNT pull-out failure. Calculation of the interaction energy and chain conformations of each PI upon CNT was performed by accurate density functional theory (DFT) calculations and molecular dynamic simulation (MDS). (more...)
Valentina Pirela, Leire Unanue, Justine Elgoyhen, Javier Ramos, Juan Francisco Vega, Agurtzane Mugica, Manuela Zubitur, Cuong Minh Quoc Le, Abraham Chemtob, Radmila Tomovska, Günter Reiter, Jaime Martín, Alejandro J. Müller. European Polymer Journal (2025) 113721
This work studies how the chemical structure of relatively similar high-sulfur alternating polythioether homopolymers (DMDS-alt-DVE, DMDS-alt-TEGDVE, and DMDS-alt-BDDVE) affects their structural properties, morphology, polymorphism, and crystallization kinetics. Differential scanning calorimetry (DSC) and polarized light optical microscopy (PLOM) experiments revealed a complex crystallization for the samples in which up to three different polymorphic phases were identified: a very low melting crystal form (VL-Tm form), a low melting crystal form (L-Tm form) and a high melting crystal form (H-Tm form), characterized by their corresponding melting temperature ranges and confirmed via Wide-Angle X-ray Scattering (WAXS). A coexistence of negative and positive spherulites was found, and their origin was revealed by atomic force microscopy (AFM), which showed how the lamellar arrangement varied in the samples from predominantly radial to a cross-hatched morphology. (more...)
Liste der Veröffentlichungen
- 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)
- Molecular Orientational Correlations and Local Order in n-Alkane Liquids
- E.W. Fischer, G.R. Strobl, M. Dettenmaier, M. Stamm, N. Steidle. Faraday Discussions 68, 26-45 (1979)
- Einige polymerspezifische Anwendungen der Schwingungsspektroskopie
- G.R. Strobl. Coll. Polym. Sci. 257, 584-590 (1979)
- Circular Fluorescence Polarization of Achiral Molecules in Cholesteric Liquid Crystals
- H. Stegemeyer, W. Stille and P. Pollmann. Israel J. Chem. 18, 312 (1979)
- Molekulare Deutung der Umwandlungswärmen bei den Modifikationsübergängen des n-Tritriacontans
- G.R. Strobl. Coll. Polym. Sci. 256, 427-445 (1978)
- Raman Spectroscopic Method for Determining Crystallinity of Polyethylene
- G.R. Strobl, W. Hagedorn. J. Polym. Sci. Part B - Polymer Physics 16, 1181-1193 (1978)
- Molecular-Motion, Thermal-Expansion, and the Phase-Transitions in Paraffins: A Model for Polymers
- G.R. Strobl. J. Polym. Sci. Part C - Polymer Symposium 59, 121-142 (1977)
- Die molekularen Grundlagen der anisotropen thermischen Ausdehnung von Paraffinen und Polyäthylen. Eine ramanspektroskopische Untersuchung am Beispiel des N-Tritriacontans
- G.R. Strobl. Coll. Polym. Sci. 254, 170-189 (1976)
- Packing of Paraffin Chains in 4 Stable Modifications of n-Tritriacontane
- W. Piesczek, G.R. Strobl, K. Malzahn. Acta Cryst. B 30, 1278 (1974)
- Defect Structure and Molecular-Motion in 4 Modifications of Normal-Tritriacontane. 2. Study of Molecular-Motion Using Infrared Spectroscopy and Wide-Line Nuclear Magnetic-Resonance Measurements
- B. Ewen, E.W. Fischer, W. Pieszek, G. Strobl. J. Chem. Phys. 61, 5265-5272 (1974)
- Defect Structure and Molecular-Motion in 4 Modifications of Normal-Tritriacontane. 1. Study of Defect Structure in Lamellar Interfaces Using Small-Angle X-Ray-Scattering
- G. Strobl, B. Ewen, E.W. Fischer, W. Piesczek. J. Chem. Phys. 61, 5257-5264 (1974)
- An exactly solvable model for coherent and incoherent exciton motion
- H. Haken and G. Strobl. Zeitschrift für Physik 262, 135-148 (1973)
- Small-angle x-ray scattering experiments for investigating the validity of the two-phase model
- G.R. Strobl, N. Müller. Journal of Polymer Science B - Polymer Physics 11, 1219-1233 (1973)
- Determination of Lamellar Structure of Partially Crystalline Polymers by Direct Analysis of their Small-Angle X-Ray-Scattering Curves
- G.R. Strobl. Journal of Applied Crystallography 6, 365-370 (1973)