Fig. 5: LA-DBU/DCNC-cys adhesive-based composites and the closed-loop circulation.
From: Reversible biobased adhesives enable closed-loop engineered composites

a Schematic illustration of closed-loop sustainable lifecycle. b Composition structure of the photovoltaic backplane. c Photos of the bonded photovoltaic backplane bending. d Process of recycling end-of-life materials into a renewable feedstock for sustainable manufacturing. e CCK-8 assay (error bars are the mean ± standard deviation of three individual experiments) and f CLSM images of LA-DBU/DCNC-cys adhesive extraction. g Human toxicity potentials analysis and h ecosystem toxicity analysis at the midpoint level.