@article{HerrmannFuelberBluemichetal., author = {Herrmann, Volker and F{\"u}lber, C. and Bl{\"u}mich, Bernhard and Unseld, K.}, title = {NMR Imaging of Thermal-Oxidative Aging in SBR}, series = {Kautschuk Gummi Kunststoffe}, volume = {48}, journal = {Kautschuk Gummi Kunststoffe}, number = {4}, pages = {254 -- 259}, language = {en} } @article{HerrmannFuelberBluemichetal., author = {Herrmann, Volker and F{\"u}lber, C. and Bl{\"u}mich, Bernhard and Unseld, K. and Jakob, K.H.}, title = {In situ investigation of SBR vulcanization}, series = {Colloid and Polymer Science}, journal = {Colloid and Polymer Science}, number = {274}, pages = {191 -- 196}, language = {en} } @article{HerrmannUnseldAlbohretal., author = {Herrmann, Volker and Unseld, K. and Albohr, O. and Fuchs, H.B.}, title = {New Indentation Methods for the Characterisation of Elastomer Composites}, series = {Kautschuk Gummi Kunststoffe}, volume = {53}, journal = {Kautschuk Gummi Kunststoffe}, pages = {52 -- 58}, language = {en} } @article{HerrmannPradoGasperetal., author = {Herrmann, Volker and Prado, P.J. and Gasper, L. and Fink, G. and Bl{\"u}mich, Bernhard and Unseld, K. and Fuchs, H.B. and M{\"o}hler, H. and R{\"u}hl, M.}, title = {The interface between covulcanized rubber sheets by NMR imaging, scanning FTIR spectroscopy, and mechanical indentation mapping}, series = {Materials and Engineering}, volume = {274}, journal = {Materials and Engineering}, pages = {13 -- 19}, language = {en} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {Investigation of Inhomogeneous Elastomers}, series = {Kautschuk Gummi Kunststoffe}, volume = {53}, journal = {Kautschuk Gummi Kunststoffe}, pages = {518 -- 527}, language = {en} } @article{HerrmannUnseldKlugetal., author = {Herrmann, Volker and Unseld, K. and Klug, A. and Fuchs, H.B.}, title = {Characterization of Carbon-Black Loaded Rubbers by the Use of the Dynamic Indentation Method}, series = {Kautschuk Gummi Kunststoffe}, volume = {53}, journal = {Kautschuk Gummi Kunststoffe}, pages = {644 -- 650}, language = {en} } @article{HerrmannSchneider, author = {Herrmann, Volker and Schneider, K.}, title = {Semi-quantitative mechanical characterisation of fibre composites in the sub-micron-range by SFM}, series = {Composites A}, volume = {32}, journal = {Composites A}, pages = {1679 -- 1687}, language = {en} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {Kraftmikroskopische Untersuchungen inhomogener Elastomersysteme}, series = {Kautschuk Gummi Kunststoffe}, volume = {54}, journal = {Kautschuk Gummi Kunststoffe}, pages = {453 -- 457}, language = {de} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {Dynamisch-mechanische Eindringversuche an inhomogenen Elastomersystemen}, series = {Kautschuk Gummi Kunststoffe}, volume = {54}, journal = {Kautschuk Gummi Kunststoffe}, pages = {397 -- 402}, language = {de} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {Homogeneity of Fillers Loaded Rubbers Investigated by the Dynamic Indentation Method}, series = {Kautschuk Gummi Kunststoffe}, volume = {54}, journal = {Kautschuk Gummi Kunststoffe}, pages = {592 -- 598}, language = {en} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {The scale behavior of fillers in elastomers by means of indentation tests}, series = {Colloid and Polymer Science}, volume = {280}, journal = {Colloid and Polymer Science}, pages = {267 -- 273}, language = {en} } @article{HerrmannUnseldFuchsetal., author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B. and Bl{\"u}mich, Bernhard}, title = {Molecular Dynamics of Elastomers investigated by DMTA and the NMR-MOUSE®}, series = {Colloid and Polymer Science}, volume = {280}, journal = {Colloid and Polymer Science}, pages = {758 -- 764}, language = {en} } @article{HerrmannBluemichAnferovaetal., author = {Herrmann, Volker and Bl{\"u}mich, Bernhard and Anferova, S. and Kremer, K. and Sharma, S. and Segre, A.}, title = {Unilateral Nuclear Magnetic Resonance for Quality Control: The NMR-MOUSE®}, series = {Spectroscopy}, volume = {18}, journal = {Spectroscopy}, number = {73}, pages = {18 -- 32}, language = {en} } @article{HerrmannUnseldFuchs, author = {Herrmann, Volker and Unseld, K. and Fuchs, H.B.}, title = {Erratum: Homogeneity of Fillers Loaded Rubbers Investigated by the Dynamic Indentation Method}, series = {Kautschuk Gummi Kunststoffe}, volume = {55}, journal = {Kautschuk Gummi Kunststoffe}, pages = {47}, language = {en} } @article{HerrmannUnseldBoehneretal., author = {Herrmann, Volker and Unseld, K. and B{\"o}hner, Th. and Bl{\"u}mich, Bernhard}, title = {Application of NMR in the Tire Industry}, series = {Kautschuk Gummi Kunststoffe}, volume = {57}, journal = {Kautschuk Gummi Kunststoffe}, pages = {22 -- 27}, language = {en} } @article{HerrmannMoegingerUnseld, author = {Herrmann, Volker and M{\"o}ginger, Bernhard and Unseld, Claus}, title = {Quasi-static Indentation Measurements: A Tool for Micro-mechanical Investigations of Interfaces in Polymer Materials}, series = {International Journal of Polymer Analysis and Characterization}, volume = {11}, journal = {International Journal of Polymer Analysis and Characterization}, number = {6}, doi = {https://doi.org/10.1080/10236660600980250}, pages = {405 -- 418}, abstract = {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.}, language = {en} } @article{FroschHerrmannGrunertetal., author = {Frosch, Stefan and Herrmann, Volker and Grunert, F. and Blume, A.}, title = {Quantification of sulfur distribution on rubber surfaces by means of μ-X-ray fluorescence analysis}, series = {Polymer Testing}, volume = {128}, journal = {Polymer Testing}, number = {108237}, doi = {10.1016/j.polymertesting.2023.108237}, abstract = {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.}, language = {en} } @article{HerrmannHanningKreyenschmidtetal., author = {Herrmann, Volker and Hanning, S. and Kreyenschmidt, M. and Wolff, A. and Ludwig, D. and Ludwig, J.}, title = {Untersuchungen zur Diffusion des Schwefels in Rezyklat-Kautschukmischungen - Teil 2: Schwefeldiffusion in Mischungen mit Gummimehl}, series = {Gummi Fasern Kunststoffe GAK}, volume = {71}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {340 -- 349}, language = {de} } @article{HerrmannSuhlFroschetal., author = {Herrmann, Volker and Suhl, L. and Frosch, S. and Endres, H.}, title = {Entwicklung eines Dynamisch-Mechanischen Indentationsmessger{\"a}ts zur Charakterisierung von Elastomeroberfl{\"a}chen auf der Mikrometerskala (µ-DMI)}, series = {Gummi Fasern Kunststoffe GAK}, volume = {75}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {30 -- 37}, language = {de} } @article{HerrmannHanningKreyenschmidt, author = {Herrmann, Volker and Hanning, S. and Kreyenschmidt, M.}, title = {Untersuchungen zur Diffusion des Schwefels in Rezyklat-Kautschukmischungen - Teil 1: Bestimmung des Diffusionskoeffizienten}, series = {Gummi Fasern Kunststoffe GAK}, volume = {71}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {232 -- 241}, language = {de} }