TY - JOUR A1 - Herrmann, Volker A1 - Fülber, C. A1 - Blümich, Bernhard A1 - Unseld, K. T1 - NMR Imaging of Thermal-Oxidative Aging in SBR JF - Kautschuk Gummi Kunststoffe Y1 - 1995 UR - http://permalink.bibkatalog.de/BV002571657 VL - 48 IS - 4 SP - 254 EP - 259 ER - TY - JOUR A1 - Herrmann, Volker A1 - Fülber, C. A1 - Blümich, Bernhard A1 - Unseld, K. A1 - Jakob, K.H. T1 - In situ investigation of SBR vulcanization BT - A combined study of 1H-NMR and vulcametry JF - Colloid and Polymer Science Y1 - 1996 UR - http://permalink.bibkatalog.de/BV012519187 IS - 274 SP - 191 EP - 196 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Albohr, O. A1 - Fuchs, H.B. T1 - New Indentation Methods for the Characterisation of Elastomer Composites JF - Kautschuk Gummi Kunststoffe Y1 - 2000 UR - http://permalink.bibkatalog.de/BV002571657 VL - 53 SP - 52 EP - 58 ER - TY - JOUR A1 - Herrmann, Volker A1 - Prado, P.J. A1 - Gasper, L. A1 - Fink, G. A1 - Blümich, Bernhard A1 - Unseld, K. A1 - Fuchs, H.B. A1 - Möhler, H. A1 - Rühl, M. T1 - The interface between covulcanized rubber sheets by NMR imaging, scanning FTIR spectroscopy, and mechanical indentation mapping BT - Macromol JF - Materials and Engineering Y1 - 2000 VL - 274 SP - 13 EP - 19 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - Investigation of Inhomogeneous Elastomers JF - Kautschuk Gummi Kunststoffe Y1 - 2000 UR - http://permalink.bibkatalog.de/BV002571657 VL - 53 SP - 518 EP - 527 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Klug, A. A1 - Fuchs, H.B. T1 - Characterization of Carbon-Black Loaded Rubbers by the Use of the Dynamic Indentation Method JF - Kautschuk Gummi Kunststoffe Y1 - 2000 UR - http://permalink.bibkatalog.de/BV002571657 VL - 53 SP - 644 EP - 650 ER - TY - JOUR A1 - Herrmann, Volker A1 - Schneider, K. T1 - Semi-quantitative mechanical characterisation of fibre composites in the sub-micron-range by SFM JF - Composites A Y1 - 2001 UR - http://permalink.bibkatalog.de/BV035250842 VL - 32 SP - 1679 EP - 1687 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - Kraftmikroskopische Untersuchungen inhomogener Elastomersysteme JF - Kautschuk Gummi Kunststoffe Y1 - 2001 UR - http://permalink.bibkatalog.de/BV002571657 VL - 54 SP - 453 EP - 457 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - Dynamisch-mechanische Eindringversuche an inhomogenen Elastomersystemen JF - Kautschuk Gummi Kunststoffe Y1 - 2001 UR - http://permalink.bibkatalog.de/BV002571657 VL - 54 SP - 397 EP - 402 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - Homogeneity of Fillers Loaded Rubbers Investigated by the Dynamic Indentation Method JF - Kautschuk Gummi Kunststoffe Y1 - 2001 UR - http://permalink.bibkatalog.de/BV002571657 VL - 54 SP - 592 EP - 598 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - The scale behavior of fillers in elastomers by means of indentation tests JF - Colloid and Polymer Science Y1 - 2002 UR - http://permalink.bibkatalog.de/BV012519187 VL - 280 SP - 267 EP - 273 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. A1 - Blümich, Bernhard T1 - Molecular Dynamics of Elastomers investigated by DMTA and the NMR-MOUSE® JF - Colloid and Polymer Science Y1 - 2002 UR - http://permalink.bibkatalog.de/BV012519187 VL - 280 SP - 758 EP - 764 ER - TY - JOUR A1 - Herrmann, Volker A1 - Blümich, Bernhard A1 - Anferova, S. A1 - Kremer, K. A1 - Sharma, S. A1 - Segre, A. T1 - Unilateral Nuclear Magnetic Resonance for Quality Control: The NMR-MOUSE® JF - Spectroscopy Y1 - 2003 UR - http://permalink.bibkatalog.de/BV041298523 VL - 18 IS - 73 SP - 18 EP - 32 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Fuchs, H.B. T1 - Erratum: Homogeneity of Fillers Loaded Rubbers Investigated by the Dynamic Indentation Method JF - Kautschuk Gummi Kunststoffe Y1 - 2002 VL - 55 SP - 47 ER - TY - JOUR A1 - Herrmann, Volker A1 - Unseld, K. A1 - Böhner, Th. A1 - Blümich, Bernhard T1 - Application of NMR in the Tire Industry JF - Kautschuk Gummi Kunststoffe Y1 - 2004 UR - http://permalink.bibkatalog.de/BV002571657 VL - 57 SP - 22 EP - 27 ER - TY - JOUR A1 - Herrmann, Volker A1 - Möginger, Bernhard A1 - Unseld, Claus T1 - Quasi-static Indentation Measurements: A Tool for Micro-mechanical Investigations of Interfaces in Polymer Materials JF - International Journal of Polymer Analysis and Characterization N2 - The ongoing use of miniaturization, multi layer structure parts, and hybrid parts requires methods to determine mechanical properties on a micro scale. However, there is a gap in measuring techniques. On one hand there are the classical methods to measure hardness, e.g., Vickers, Rockwell, Universal, and IRHD, having resolutions typically above 100 µm. On the other hand, there are well-developed AFM methods that allow for the determination of mechanical properties in the nanometer range. This article describes an indentation technique that yields data of mechanical properties in the micrometer range between typically 5 and 50 µm. The measuring device and the data evaluation are presented. Results of micro-mechanical mapping are shown for NR-SBR rubber interfaces, a fuel tank, and a part manufactured by two-component injection molding. Finally, the measured micro-mechanical stiffness is compared to the Young's modulus of the corresponding materials. Y1 - 2006 U6 - https://doi.org/https://doi.org/10.1080/10236660600980250 VL - 11 IS - 6 SP - 405 EP - 418 ER - TY - JOUR A1 - Frosch, Stefan A1 - Herrmann, Volker A1 - Grunert, F. A1 - Blume, A. T1 - Quantification of sulfur distribution on rubber surfaces by means of μ-X-ray fluorescence analysis JF - Polymer Testing N2 - A homogeneous distribution of sulfur in a rubber compound is often desired. Spatially resolved imaging techniques are useful for evaluating the distribution of this crosslinking chemical. Typical measurement methods such as SEM (scanning electron microscopy) or TEM (transmission electron microscopy) have very high resolutions. However, the sample size or the maximum area to be investigated is limited, which makes it difficult to obtain a statistically reliable determination of sulfur homogeneity across the component or sample. In this work, an alternative measurement technique is therefore presented: the μ-XRF (μ-X-ray fluorescence analysis). With the help of this method, it is possible to scan surfaces of several cm2 and to show the distribution of different chemical elements. Its measuring principle has been known for decades but has hardly been used in the rubber industry so far. The main reason for this is that its quantification process for polymeric samples is more complex than for geologic or metallic samples, which are typically been investigated with μ-XRF to date. In this paper, this issue is addressed and a solution is presented: With the help of the fundamental parameter method, the determination of sulfur homogeneity and distribution on rubber surfaces becomes possible. This opens up a variety of further possibilities for the use of μ-XRF in the rubber industry: For example, it could be used in areas of tire production, recycling of end-of-life rubber, and beyond. Y1 - 2023 U6 - https://doi.org/10.1016/j.polymertesting.2023.108237 VL - 128 IS - 108237 ER - TY - JOUR A1 - Herrmann, Volker A1 - Hanning, S. A1 - Kreyenschmidt, M. A1 - Wolff, A. A1 - Ludwig, D. A1 - Ludwig, J. T1 - Untersuchungen zur Diffusion des Schwefels in Rezyklat-Kautschukmischungen - Teil 2: Schwefeldiffusion in Mischungen mit Gummimehl JF - Gummi Fasern Kunststoffe GAK Y1 - 2018 VL - 71 SP - 340 EP - 349 ER - TY - JOUR A1 - Herrmann, Volker A1 - Suhl, L. A1 - Frosch, S. A1 - Endres, H. T1 - Entwicklung eines Dynamisch-Mechanischen Indentationsmessgeräts zur Charakterisierung von Elastomeroberflächen auf der Mikrometerskala (µ-DMI) JF - Gummi Fasern Kunststoffe GAK Y1 - 2022 VL - 75 SP - 30 EP - 37 ER - TY - JOUR A1 - Herrmann, Volker A1 - Hanning, S. A1 - Kreyenschmidt, M. T1 - Untersuchungen zur Diffusion des Schwefels in Rezyklat-Kautschukmischungen - Teil 1: Bestimmung des Diffusionskoeffizienten JF - Gummi Fasern Kunststoffe GAK Y1 - 2018 VL - 71 SP - 232 EP - 241 ER -