Fig. 7
From: Influence of plastic shape on interim fragmentation of compostable materials during composting
Scenario C: characterization of polymer compound fragments from composting of coated paper. a) A total numbers of fragments that matched the reference spectrum of the biodegradable ecovio® PS1606 with varying % of PLA; b) µ-Raman thumbnails of fragments and their spectra after 5 days of composting and removal of cellulose by oxidation and density separation; c-d) µ-Raman analysis of a representative large fragment after 5 days of composting and removal of cellulose by oxidation and density separation; e) higher-resolution image by fluorescence microscopy of a polymer compound coated paper before it entered the composting phase (with cellulose fibres visible underneath); f) representative fragment after 5 days of composting imaged by fluorescence microscopy, without oxidation or density separation