講演情報
[17a-K406-9]Quantitative detection of pressure distribution on mechanochromic chameleon Packaging system
〇(PC)Bratati Das1, Kaori Sugihara1 (1.Tokyo Univ.)
キーワード：
quantitative calibration、chameleon packaging、pressure analysis app
Intelligent packaging system is gaining its popularity for consumer preferences for medicine or food safety [J. Environ. Chem. Eng. 2022, 10 (4), 107894]. In our present work we demonstrated a mechanochromic chameleon packaging system that quantitatively maps the pressure history experienced during transport with a spatial resolution of a few millimetres based on the polydiacetylene blue-to-red color transition [ACS sensors, 2024, https://doi.org/10.1021/acssensors.4c02694]. The key aspects of the development were 1) the adjustment of the sensitivity by adding guest molecules into the PDA matrix, 2) quantitative calibration, and 3) the accurate reading of the pressure from RGB images based on the calibration. Paper-integrated PDA presented a unique speed-dependent force response both characterized at the macro- (0.11-0.35 MPa) and nanoscale (2.59- 8.86 MPa). The scanning speed was found to be one of the key parameters. Finally, we will demonstrate the “Pressure Analysis App”, a mobile application that allows users to easily obtain pressure values applied to damaged packaging areas simply by taking a photo of the red scratches on the package.