Ghorani, Behrouz, Emadzadeh, Bahareh, Fooladi, Ebrahim and Tucker, Nick (2023) Designing a colorimetric nanosensor based on dithizone and cholesteric liquid crystals loaded in electrospun cellulose acetate nanofibers: Monitoring the quality of pistachio as a case study. Journal of Applied Polymer Science, 140 (7). pp. 1-14. ISSN : 0021-8995
Full content URL: http://dx.doi.org/10.1002/app.53472
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Manuscript- Designing a thermochromic nanosensor Pistachios.docx - Whole Document Restricted to Repository staff only until 15 November 2023. 4MB |
Item Type: | Article |
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Item Status: | Live Archive |
Abstract
We describe colorimetric electrospun nanosensors designed to work at temperatures of 35–36�C. The mode of operations is based on a combination of the
ability of dithizone to exhibit appropriate color and cholesteric liquid crystals
presenting a wide range of melting points at various mixing ratios. To this end,
different levels of dithizone (IUPAC name 1-anilino-3-phenyliminothiourea),
different ratios of cholesteric liquid crystals to cellulose acetate and cholesteryl
oleyl carbonate to cholesteryl nanoate were defined as independent variables
and the total color difference was considered as the response in the response
surface methodology approach. The results showed that the range of color palette changes of the designed samples was diverse and could be applied to different products. As a case study, the applicability of the sensor was evaluated
on the 4-month shelf life of pistachio nuts at 35�C whilst the spoilage criteria
were reconciled with the color changes in the designed sensor
Keywords: | cholesteric liquid crystal, colorimetric sensor, Electrospinning, nanofibers, pistachio |
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Subjects: | H Engineering > H811 Biochemical Engineering |
Divisions: | College of Science > School of Engineering |
ID Code: | 53012 |
Deposited On: | 17 Jan 2023 11:44 |
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