Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/92710
Título: | Irreversible temperature indicator based cellulose membranes conjugated with leuco-dye pigment |
Autor(es): | Carvalho, Margarida Tavares, Ana P. M. Marques, Maria A. Alves, Joaquim J. Figueira, Joana Morais, Maria Pinto, Joana V. Moreira, Felismina T. C. |
Palavras-chave: | Cellulose Colorimetric Double membranes Irreversible Leuco-dye Temperature monitoring |
Data: | Ago-2024 |
Editora: | John Wiley & Sons |
Revista: | Journal of Applied Polymer Science |
Citação: | Carvalho, M., Tavares, A. P. M., Marques, M. A., Alves, J. J., Figueira, J., Morais, M., … Moreira, F. T. C. (2024, June 4). Irreversible temperature indicator based cellulose membranes conjugated with leuco‐dye pigment. Journal of Applied Polymer Science. Wiley. http://doi.org/10.1002/app.55762 |
Resumo(s): | This research focuses on the development of thermochromic membranes made of cellulose acetate (CA) for temperature monitoring of sensitive food products. Two dual TC membranes developed for the control of different temperature ranges were formulated using a three-component system: a leuco-dye membrane (crystal violet lactone, CVL) integrated with an acidic membrane containing the color developer (salicylic acid) and the acidic solvent with different melting points (decanoic acid, DA, or methacrylic acid, MA). The CVL membrane, together with the DA membrane, showed an irreversible color change when exposed to 35°C, which was facilitated by the melting of DA. The CVL membrane also underwent an irreversible color change when exposed to 15°C together with the MA membrane. The membranes were characterized in detail using scanning electron microscopy. The evaluation of color changes, reproducibility, specificity, and stability ensured the practical suitability of these membranes. Overall, this innovative approach has proven to be a reproducible, sustainable, cost-effective method to produce irreversible colorimetric temperature sensors. These sensors have significant potential for applications in the food and pharmaceutical industries and offer a promising way to improve product safety and quality. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/92710 |
DOI: | 10.1002/app.55762 |
ISSN: | 0021-8995 |
Versão da editora: | http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-4628 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_57887_1.pdf | 389,93 kB | Adobe PDF | Ver/Abrir |