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Irreversible temperature indicator based cellulose membranes conjugated with leuco-dye pigment

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datacite.subject.fosEngenharia e Tecnologia
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
dc.contributor.authorCarvalho, Margarida
dc.contributor.authorTavares, Ana P. M.
dc.contributor.authorMarques. Maria A.
dc.contributor.authorAlves, Joaquim J.
dc.contributor.authorFigueira, Joana
dc.contributor.authorMorais, Maria
dc.contributor.authorPinto, Joana V.
dc.contributor.authorMoreira, Felismina T. C.
dc.date.accessioned2025-02-11T19:11:53Z
dc.date.available2025-02-11T19:11:53Z
dc.date.issued2024
dc.description.abstractThis 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.eng
dc.description.sponsorshipThis project was a financially supported through the project ThermalTrace, entitled “Smart packaging for continuous temperature monitoring of liquid beverage” supported by Agência Nacional de Inovação (ANI), candidate to the System of Incentives for Research and Technological Development, co-financed by the European Regional Development Fund (ERDF). POCI-01-0247-FEDER-047094.
dc.identifier.citationM. Carvalho, A. P. M. Tavares, M. A. Marques, J. J. Alves, J. Figueira, M. Morais, J. V. Pinto, F. T. C. Moreira, J. Appl. Polym. Sci. 2024, 141(32), e55762. https:// doi.org/10.1002/app.55762
dc.identifier.doi10.1002/app.55762
dc.identifier.issn0021-8995
dc.identifier.urihttp://hdl.handle.net/10400.22/29470
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relation.hasversionhttps://onlinelibrary.wiley.com/doi/10.1002/app.55762
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectcellulose
dc.subjectcolorimetric
dc.subjectdouble membranes
dc.subjectirreversible
dc.subjectLeuco-dye
dc.subjecttemperature monitoring
dc.titleIrreversible temperature indicator based cellulose membranes conjugated with leuco-dye pigmenteng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue32
oaire.citation.titleJournal of Applied Polymer Science
oaire.citation.volume141
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85

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