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Applications of oxygen sensors using smart membranes incorporating polymerized 2,6-dichloroindophenol as a novel method for preventing food spoilage | ||
| Caspian Journal of Environmental Sciences | ||
| دوره 22، شماره 1، فروردین 2024، صفحه 147-154 اصل مقاله (932.17 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22124/cjes.2023.7299 | ||
| نویسندگان | ||
| Tannaz Hasani1؛ Hamid Hashemi-Moghaddam* 2؛ Behrouz Akbari-Adergani3 | ||
| 1Department of Chemical Engineering, Damghan Branch, Islamic Azad University, Damghan, Iran | ||
| 2Department of Chemistry, Damghan Branch, Islamic Azad University, Damghan, Iran | ||
| 3Ministry of Health and Medical Education, Food and Drug Organization, Iran | ||
| چکیده | ||
| Monitoring molecular oxygen concentrations is critical for many applications, yet developing robust and cost-effective colorimetric sensors capable of detecting color changes remains a longstanding challenge. The current work exhibits the development of an optical oxygen sensor using a smartphone and a sensitive membrane. Radical polymerization was used to coat the surface of silica nanoparticles with a 2,6-dichloroindophenol molecularly imprinted polymer using methacrylic acid, ethylene glycol dimethacrylate, and 2,2′-azobisisobutyronitrile as the functional monomer, cross-linker, and initiator, respectively. After characterizing the imprinted polymers with FTIR, SEM, and XRD, this nanocomposite was impregnated into a PVDF membrane, which changes color when exposed to oxygen. A smartphone's camera was used to identify the color changes using RGB profiling, and this standalone sensor demonstrated good sensitivity. An increasing calibration curve with a linear detection range of 4.79-40 KPa was found by calibrating oxygen samples with slopes for R + G + B pixels. This sensor's suitability for use in food packaging was investigated. The fabricated sensor is very low-cost, easy to use, and can potentially be used in various industries for inexpensive oxygen detection. | ||
| کلیدواژهها | ||
| Oxygen sensor؛ 2؛ 6-Dichloroindophenol؛ Imprinted polymer | ||
| مراجع | ||
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