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3D Bioplotter Research Papers
Displaying all papers by P. Worajittiphon (1 results)
3D-printed PLA/PEO blend as biodegradable substrate coating with CoCl2 for colorimetric humidity detection
Food Packaging and Shelf Life
2022
Volume 32, Article 100829
This study aimed to fabricate biodegradable substrate with colorimetric humidity indicator for detective moisture in food packaging. The poor properties of poly(lactic acid) (PLA) were enhanced by melt blending PLA with non-toxic poly(ethylene oxide) PEO at 180 °C. Specifically, three-dimensional (3D) substrates of PLA/PEO blends were fabricated by solvent-cast 3D printing. Furthermore, cobalt chloride (CoCl2) solution was printed onto the substrate with an inkjet printer to serve as a colorimetric humidity sensing indicator. It found that the flexibility and thermal stability of the PLA were improved and the hydrophilicity was increased with an increase in PEO content. Color changes and…