Ulrich Giese

Ulrich Giese received his PhD in chemistry in 1988. He started in 1989 working in rubber ‎research at the German Institute of Rubber Technology (DIK). He is currently managing ‎director of DIK eV and DIK Testing Laboratory. Since 2010, Giese has been a ‎distinguished professor at the Leibniz University of Hannover (polymer/analytical ‎chemistry). Since 2013 he has been editor of the International Rubber Journal KGK. ‎Achievements include more than 145 publications; 180 lectures; acting as supervisor for more than 45 PhD ‎theses; and winning the Best Paper Award IRC 2014, Harries Medal DKG 2018, and ACS - Georg Stafford ‎Withby Award 2019. ‎

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Presentation

Influence of dynamic-mechanical load on thermal oxidative aging of elastomers

Depending on the elastomer composition, thermal-oxidative aging processes lead ‎to radical polymer degradation in competition with the formation of a secondary ‎network. During dynamic deformation, accelerated cracking and softening of a ‎component with the release of new surfaces for accelerated O2 input is to be ‎expected. Dynamic aging experiments with and without oxygene were performed ‎using time-to-failure analyses. The relationship between crack formation and DLO-‎effect (diffusion-limited oxidation) is investigated and characterized by highly sophisticated analytical methods. ‎