Modelling decay of number averaged MW of PEG. In a first approach we assumed simple pseudo-first-order reaction kinetics to model the rates of pool because in this simulation they did not react further. A total of 9 reaction intermediates formed in the shown simulation up to the third generation (i.e., PEG molecules formed from three previous chain scissions). The simulation was terminated when a total of 20 scissions were reached (i.e., a 𝑆𝚤𝐶 """"" = 1 because these scissions occurred on 20 initial chains, resulting in a total of 40 arrows in Figure ). The final distribution of simulated PEG chains is shown below the network plot in nr% abundance (i.e., the number of PEG molecules with a given MW over the total number of chains obtained) versus MW. The simulation reveals that many of the initial PEG molecules (approx. 50 nr%) have not reacted at 𝑆𝚤𝐶 """"" = 1 and that those which reacted formed shortened PEG molecules with approximately equal nr% across the entire MW spectrum.