TY - JOUR A1 - Theiler, Geraldine A1 - Wachtendorf, Volker A1 - Elert, Anna Maria A1 - Weidner, Steffen T1 - Effects of UV radiation on the friction behavior of thermoplastic polyurethanes T2 - Polymers Testing N2 - The effects of weathering exposure on unfilled and filled thermoplastic polyurethanes (TPU) materials are described as performed under different humidity conditions. For this purpose, a weathering device was used with UV-A 340 nm lamps at a constant temperature of 40 °C. The effects of environmental (UV and humidity condition) degradation on the frictional properties of TPU materials are presented along with surface analyses to characterize the chemistry of the degradative process. Photooxidative degradation of unfilled polymer leads to deterioration of physical and mechanical properties, which affects its tribological behavior significantly. Due to crosslinking, the stiffness of the material increases, reducing drastically the friction coefficient of unfilled TPUs. The frictional behavior of glass fiber reinforced TPU is less affected by radiation. PB - Elsevier Ltd. CY - Amsterdam KW - Photooxidation KW - UV radiation KW - Friction KW - TPU KW - Humidity PY - 2018 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/45709 AN - OPUS4-45709 SN - 0142-9418 SN - 1873-2348 VL - 70 SP - 467 EP - 473 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany