Publication
Crystalline films of L‐threonine complexed with copper (II) dispersed in a Galactomannan solution: a structural, vibrational, and thermal study
| dc.contributor.author | Oliveira Neto, João G. | |
| dc.contributor.author | Cavalcante, Lincoln A. | |
| dc.contributor.author | Gomes, Eduardo S. | |
| dc.contributor.author | Dos Santos, Adenilson O. | |
| dc.contributor.author | Sousa, Francisco F | |
| dc.contributor.author | Mendes, Fernando 1973- | |
| dc.contributor.author | Macêdo, Ana Angélica M | |
| dc.date.accessioned | 2020-04-17T21:39:36Z | |
| dc.date.available | 2020-04-17T21:39:36Z | |
| dc.date.issued | 2019-10-01 | |
| dc.description.abstract | The study’s aim was to synthesize a crystalline film formed by L-threonine crystals complexed with Cu2+ ions (LTCu) dispersed in a galactomannan (Gal) solution as well as to characterize its structural, vibrational, and thermal properties. Gal(LTCu) films were prepared by the addition of copper II L-threoninate crystals in concentrations of 0.25, 0.50, and 0.75 in 2%Gal solution. To characterize the Gal(LTCu) properties, we used X-ray diffraction (XRD), UV–Vis and Raman spectroscopy, thermogravimetry, and thermal analyses (TG- DTA). XRD showed that the Gal(LTCu) films are crystalline and have acquired coloration similar to the one of LTCu crystal. The UV–Vis spectra revealed that the films tend to assume a square planar conformation due to Jahn Teller effect. Bands related to the interaction between the metal ion with the organic compounds were observed through the Raman spectra. TG-DTA showed that the films exhibit low thermal stability due to the dehydration process | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Oliveira Neto, J. G. et al. Crystalline Films of L‐Threonine Complexed with Copper (II) Dispersed in a Galactomannan Solution: A Structural, Vibrational, and Thermal Study. Polym. Eng. Sci. pen.25260 (2019). doi:10.1002/pen.25260 | pt_PT |
| dc.identifier.doi | 10.1002/pen.25260 | pt_PT |
| dc.identifier.issn | 1548-2634 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/32016 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Wiley | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | pt_PT |
| dc.subject | Crystalline films | pt_PT |
| dc.subject | Threonine | pt_PT |
| dc.subject | Copper | pt_PT |
| dc.subject | Galactomannan solution | pt_PT |
| dc.title | Crystalline films of L‐threonine complexed with copper (II) dispersed in a Galactomannan solution: a structural, vibrational, and thermal study | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 77 | pt_PT |
| oaire.citation.issue | 1 | pt_PT |
| oaire.citation.startPage | 71 | pt_PT |
| oaire.citation.title | Polymer Engineering & Science | pt_PT |
| oaire.citation.volume | 60 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |