Fig. 3

µ-Raman thumbnails of fragments and their spectra after industrial composting. a) micronized ecovio® PS1606 granules after 7 days (scenario A); b) micronized ecovio® PS1606 films after 10 days (scenario B). A Raman spectrum in the interval 3600 to 50 cm⁻¹ was acquired for each particle on the filter for up to N = 30,000 total particles, resulting in the statistical representation of particle size and identity in the Supplementary Information (compare to data in our previous publication  [18] and the detailed Tables S4 and S5). Each thumbnail has a field of view adapted to the respective particle