Sammlung_FB 15
Permanent URI for this collectionhttps://vhrz2219.hrz.uni-marburg.de/handle/123456789/28
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Research Data Differentiation between Hydrolytic and Thermo-Oxidative Degradation of Poly(lactic acid) and Poly(lactic acid)/Starch Composites in Warm and Humid Environments [Dataset](Universität Kassel) Goetjes, Victoria; Zarges, Jan-Christoph; Heim, Hans-PeterFor the application of poly(lactic acid) (PLA) and PLA/starch composites in technical components such as toys, it is essential to know their degradation behavior under relevant application conditions in a hydrothermal environment. For this purpose, composites made from PLA and native potato starch were produced using twin-screw extruders and then processed into test specimens, which were then subjected to various one-week ageing processes with varying temperatures (23, 50, 70, 90 °C) and humidity levels (10, 50, 75, 90%). This was followed by mechanical characterization (tensile test) and identification of degradation using Gel Permeation Chromatography (GPC), Thermogravimetric Analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), and Nuclear Magnetic Resonance spectroscopy (NMR). With increasing temperature and humidity, there was a clear degradation of the PLA, which could be reduced or slowed down by adding 50 wt.% starch, due to increased crystallinity. Hydrolysis was identified as the main degradation mechanism for PLA and PLA/starch composites, especially above the glass transition temperature, with thermo-oxidative degradation also playing a subordinate role. Both hydrolytic degradation and thermo-oxidative degradation led to a reduction in mechanical properties such as tensile strength. In case you use the data please cite our corresponding article (https://doi.org/10.3390/ma17153683).Research Data Pathways toward the Use of Non-Destructive Micromagnetic Analysis for Porosity Assessment and Process Parameter Optimization in Additive Manufacturing of 42CrMo4 (AISI 4140) [Dataset]Engelhardt, Anna; Wegener, Thomas; Niendorf, ThomasResearch Data Studie zum Einsatz der ereignisdiskreten Simulation in Produktion und Logistik (Forschungsdaten)Sutherland, Robin; Özkul, Felix; Wenzel, SigridResearch Data Research Data Influence of Ethylene Oxide and Gamma Irradiation Sterilization Processes on the Properties of Poly-L-Lactic-Acid (PLLA) Materials [Dataset]Krug, Natalie; Heim, Hans-Peter; Zarges, Jan-ChristophResearch Data Source code for a program to calculate Schmid-factorsFrenck, Johanna-Maria; Frenck, Georg; Degener, Sebastian; Vollmer, Malte; Niendorf, ThomasResearch Data Reconstruction of Incomplete X-Ray Diffraction Pole Figures Using Deep Learning(2019-05-28) Vollmer, Malte; Degener, Sebastian; Meier, David; Ragunathan, Rishan; Liehr, Alexander; Sick, Bernhard; Niendorf, ThomasResearch Data Haptic Polymer Testing: A Method for Evidence-Based Material Perception MeasurementSchweiger, Leander; Heim, Hans-PeterResearch Data Performance of Thermo-Mechanically Processed AA7075 Alloy at Elevated Temperatures—From Microstructure to Mechanical PropertiesSajjadifar, Seyedvahid; Scharif, Emad; Steinhoff, Kurt; Niendorf, Thomas; Weidig, UrsulaResearch Data Investigation of processing windows in additive manufacturing of AlSi10Mg for faster production utilizing data-driven modelingEngelhardt, Anna; Kahl, Matthias; Richter, Julia; Krooß, Philipp; Kroll, Andreas; Niendorf, Thomas