Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/40359

TitleProperties and thermal behavior of natural deep eutectic solvents
Author(s)Craveiro, R.
Aroso, Ivo Manuel Ascensão
Flammia, V.
Carvalho, T.
Viciosa, M. T.
Dionísio, M.
Barreiros, S.
Reis, R. L.
Duarte, Ana Rita C.
Paiva, Alexandre
KeywordsCholine chloride
Conductivity
Deep eutectic eolvents
Physical properties
Thermal analysis
Deep eutectic solvents
Issue date2016
PublisherElsevier
JournalJournal of Molecular Liquids
CitationCraveiro R., Aroso I. M., Flammia V., Carvalho T., Viciosa M. T., Dionísio M., Barreiros S., Reis R. L., Duarte A. R. C., Paiva A. Properties and thermal behavior of natural deep eutectic solvents, Journal Of Molecular Liquids, Vol. 215, pp. 534-540, doi:10.1016/j.molliq.2016.01.038, 2016
Abstract(s)Natural deep eutectic solvents (NADES) have shown to be promising sustainable media for a wide range of applications. Nonetheless, very limited data is available on the properties of these solvents. A more comprehensive body of data on NADES is required for a deeper understanding of these solvents at molecular level, which will undoubtedly foster the development of new applications. NADES based on choline chloride, organic acids, amino acids and sugars were prepared, and their density, thermal behavior, conductivity and polarity were assessed, for different NADES compositions. The NADES studied can be stable up to 170 Â°C, depending on their composition. The thermal characterization revealed that all the NADES are glass formers and some, after water removal, exhibit crystallinity. The morphological characterization of the crystallizable materials was performed using polarized optical microscopy which also provided evidence of homogeneity/phase separation. The conductivity of the NADES was also assessed from 0 to 40 Â°C. The more polar, organic acid-based NADES presented the highest conductivities. The conductivity dependence on temperature was well described by the Vogelâ Fulcherâ Tammann equation for some of the NADES studied.
TypeArticle
URIhttp://hdl.handle.net/1822/40359
DOI10.1016/j.molliq.2016.01.038
ISSN0167-7322
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0167732215303019
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:3B’s - Artigos em revistas/Papers in scientific journals

Files in This Item:
File Description SizeFormat 
18658-Properties and thermal behavior of natural deep eutectic solvents.pdf
  Restricted access
1,05 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID