| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 가을 (10/20 ~ 10/22, 경주컨벤션센터) |
| 권호 |
46권 2호 |
| 발표분야 |
Korea-Australia Joint Symposium: Functional Macromolecules for Advanced Applications (English) |
| 제목 |
Polydiacetylene-based Colorimetric Sensors to Detect Food Spoilage |
| 초록 |
Polydiacetylenes (PDAs) are a class of conjugated polymers with unique optical properties that make them excellent materials for the construction of colorimetric sensors. Diacetylene monomers polymerize when exposed to 254 nm UV light and polymerization typically yields blue-phase PDAs. Chemical/biological recognition events can induce a blue-to-red color transition of PDA detected by the naked eye. We report the synthesis and applications of PDA that enables low-cost monitoring of food spoilage (e.g. milk, meat and fruit). We investigated a range of monomers with different lengths of alkyl spacer and tail. To fabricate the film sensors, we stabilized PDA in polymer matrix. We successfully demonstrated the sensor application by integrating them into food packaging stored at -20 °C, 4 °C, and room temperature. The PDA sensors will provide a real-time indication of food quality, surpassing the function of traditional use-by dates that provide an indication of expected shelf life. |
| 저자 |
Rona Chandrawati |
| 소속 |
The Univ. of New South Wales (UNSW Sydney) |
| 키워드 |
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| E-Mail |
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