The influence of the rotational speed is determined with tungsten carbide grinding balls in the range between 180 rpm and 430 rpm. The results are shown in Figure . consists almost exclusively of oligomers. As the rotational speed increases, the soluble fraction increases to around 48 % at 250 rpm and 97 % at 350 rpm. In the process, more glucose is formed, which means that the reaction approaches the equilibrium of polymerization and depolymerization. The weight average molecular weights (Table ) decrease from 4424 Da at 180 rpm to 2889 Da at 350 rpm, which is consistent with the progressive depolymerization towards the equilibrium of polymerization and depolymerization. At 430 rpm, on the other hand, a renewed increase to 4211 Da can be observed. In this test, the temperature is higher and is 115 °C. This leads to the beginning of carbonization which impacts the reaction. An interpretation of this experiment is therefore not possible.