TY - JOUR A1 - Böhning, Martin A1 - Niebergall, Ute A1 - Adam, Adeline A1 - Stark, Wolfgang T1 - Influence of biodiesel sorption on temperature-dependent impact properties of polyethylene T2 - Polymer Testing N2 - In a previous paper we investigated the influence of sorbed biodiesel or diesel on mechanical properties of a typical polyethylene grade for tank applications. Besides the basic sorption and desorption behavior of these two fuels, the study addressed the concentration-dependent mechanical properties as revealed by a non-instrumented Charpy impact test and dynamic mechanical analysis (DMA). In the present paper we extend this investigation focusing on the temperature-dependent impact fracture behavior. Therefore, an instrumented Charpy impact test was employed, allowing a more detailed analysis of the fracture behavior. Furthermore, from the load-time-diagrams obtained from the instrumented impact test, corresponding fracture times can be calculated, allowing a clear correlation of the fuel sorption induced changes in fracture toughness with the enhanced ß-relaxation observed by DMA. As in the previous study, the fracture surfaces of the impact tested specimens were analyzed in order to confirm the brittle or ductile character of the fracture indicated by impact strength and the corresponding load-deflection diagrams. PB - Elsevier Science CY - Amsterdam [u.a.] KW - Biodiesel KW - Fuel sorption KW - Impact strength KW - Charpy impact test KW - Dynamic-mechanical analysis KW - Relaxation KW - PE-HD PY - 2014 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/31583 AN - OPUS4-31583 SN - 0142-9418 VL - 40 SP - 133 EP - 142 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany