Publications
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Recent Publications
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...)
Gabriele Greco, Benjamin Schmuck, Fredrik G. Bäcklund, Günter Reiter and Anna Rising. ACS Appl. Polym. Mater. 6 (2024) 14342–14350
Recent biotechnological advancements in protein production and development of biomimetic spinning procedures make artificial spider silk a promising alternative to petroleum-based fibers. To enhance the competitiveness of artificial silk in terms of mechanical properties, refining the spinning techniques is imperative. One potential strategy involves the integration of post-spin stretching, known to improve fiber strength and stiffness while potentially offering additional advantages. Here, we demonstrate that post-spin stretching not only enhances the mechanical properties of artificial silk fibers but also restores a higher and more uniform alignment of the protein chains, leading to a higher fiber toughness. (more...)
Raphael Hertel, Maximilian Raisch, Michael Walter, Günter Reiter, Michael Sommer. Angew. Chem. Int. Ed. 2024, e202409369
Sterically distorted donor-acceptor p‑systems, termed DA springs, can be progressively planarized under mechanical load causing a bathochromic shift of the photoluminescence (PL) spectrum. By combining theory and experiment, we here use a simple linear force calibration for two different conformational mechanochromophores to determine molecular forces in polymers from the mechanochromic shift in PL wavelength during multiple uniaxial tensile tests. Two systems are used, i) a highly entangled linear glassy polyphenylene and ii) a covalent elastomeric polydimethylsiloxane network. The mean forces estimated by this method are validated using known threshold forces for the mechanochemical ring-opening reactions of two different spiropyran force probes. The agreement between both approaches underlines that these DA springs provide the unique opportunity for the online monitoring of local molecular forces present in diverse polymer matrices.(more...)
List of Publications
- Surfactants: Eigenschaften und Einsatz in der Beschichtungstechnik
- G. Reiter. Kapitel 5: in Grundlagen und Verfahren der Beschichtungstechnik, Kurzlehrgang, Erlangen 1997
- Connectors in Adhesion and Contact Angle Hysteresis
- G. Reiter, A. Casoli, A. Sharma, P. Auroy. Dans les actes de JADH'97: 9émes Journées d'Etudes sur l'Adhesion, Sept. 1997 in St. Lary/F, Edition SFV, Paris 1997, p. 68-73
- Large-scale heterogeneities in entangled polymer solutions. Light-scattering study on polystyrene in toluene
- M. Heckmeier, M. Mix, G. Strobl. Macromolecules 30, 4454-4458 (1997)
- A four-state scheme for treating polymer crystallization and melting suggested by calorimetric and small angle X-ray scattering experiments on syndiotactic polypropylene
- J. Schmidtke, G. Strobl, T. ThurnAlbrecht. Macromolecules 30, 5804-5821 (1997)
- The Effect of Dissolved Side-Group Polymers on Pattern Dynamics in Nematic Liquid Crystals in a Rotating Magnetic Field
- E.E. Pashkovsky, W. Stille, G. Strobl and D. Talebi. J. Phys. II France 7 (1997) 707-727
- Structural transition in a nematic LC block copolymer induced by the transition to the LC phase
- J. Sänger, W. Gronski, S. Maas, B. Stühn, B. Heck. Macromolecules 30, 6783-6787 (1997)
- A new approach to polymer crystallization used in an analysis of data of syndiotactic polypropylene
- Gert Strobl. Acta Polymerica 48, 562-570 (1997)
- Director field patterns of nematic polymer solutions at asynchronous rotation in a magnetic field
- E. Pashkovsky, W. Stille, G. Strobl and D. Talebi. Mol. Cryst. Liq. Cryst. 302, 403 (1997)
- SAXS and TEM studies on poly(styrene)-block-poly(ethene-co-but-1-ene)-block-poly(styrene) in bulk and at various interfaces
- B. Heck, P. Arends, M. Ganter, J. Kressler, B. Stühn. Macromolecules 30, 4559-4566 (1997)
- Improving Adhesion via Connector Polymers to Stabilize Non-wetting Liquid Films
- G. Reiter, J. Schultz, P. Auroy, L. Auvray. Europhys. Lett. 33, 29 (1996)
- Instabilities of Thin Polymer Films on Layers of Chemically Identical Grafted Molecules
- G. Reiter, P. Auroy, L. Auvray. Macromolecules 29, 2150 (1996)
- The Effect of Adhesion on the Rheological and Frictional Behavior of a Confined Lubricant Film
- G. Reiter. J. Adhesion 57, 55 (1996)
- Instability of Thin Polymer Films on Coated Substrates: Rupture, Dewetting and Drop Formation
- A. Sharma, G. Reiter. J. Coll. Interf. Sci. 178, 383 (1996)
- Glass transition in ethylene-vinylacetate copolymers analyzed by combined dielectric and X-ray scattering experiments
- Bernd Holzer, Gert Strobl. Acta Polymerica 47, 40-47 (1996)
- Observation of the early stages of crystallization in polyethylene by time-dependent SAXS: Transition from individual crystals to stacks of lamellae
- T. Albrecht, G. Strobl. Macromolecules 29, 783-785 (1996)
- Autophobic Behavior of Polymers at Interfaces
- G. Reiter, P. Auroy, L. Auvray. Proceedings of the Moriond 95 Workshop, in: Moriond Condensed Matter Physics: “Short and Long Chains at Interfaces”, eds. J. Daillant, P. Guenoun, C. Marques, P. Muller, J. Trân Thanh Vân, p. 57-66
- The Solid-like State of a Confined Liquid Lubricant: Deformation and Time Effects
- G. Reiter, A. L. Demirel, J. Peanasky, L. Cai, S. Granick. Proceedings of the NATO Workshop on “The Physics of Sliding Friction” at Trieste/Italy, 1995,. Eds. B.N.J. Persson, E. Tosatti, NATO ASI Serie E, 311, 119-128 (1996)
- What Determines Static Friction and Controls the Transition to Sliding
- G. Reiter, A. L. Demirel, J. Peanasky, L. Cai, S. Granick. Tribology Lett. 1, 1 (1995)
- Temperature-Dependent Crystalline-Amorphous Structures in Isotactic Polypropylene - Small-Angle X-Ray-Scattering Analysis of Edge-Bounded 2-Phase Systems
- T. Albrecht, G. Strobl. Macromolecules 28, 5267-5273 (1995)
- Periodic Pattern Formation in Side-Group Polymer Nematic Solutions at the Twist Frederiks Transition
- E. E. Pashkovsky, W. Stille and G. Strobl. J. Phys. II France 5, 397 (1995)