Figure 5From: Polylactic acid composites incorporating casein functionalized cellulose nanowhiskersVisual comparison of PLA and its composites. (a) Image showing the appearance of different samples. (b-d) Optical micrographs of the materials: (b) PLA; (c) PLA-CNW2; and (d) PLA-CS-CNW2. (e-f) Fluorescent images of the composites: (e) PLA-CNW2; (f) PLA-CS-CNW2. The aggregations of CNWs are circled in (e).Back to article page