| Titre : |
Effects of starch addition on the characteristics of CoAl2O4 nano pigments |
| Type de document : |
texte imprimé |
| Auteurs : |
Leila Torkian, Auteur ; Elham Radmanesh, Auteur ; Maryam Daghighi, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 376-379 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Amidons
Bleu de cobalt
Colorimétrie
Matériaux nanocristallins
Nanoparticules -- Synthèse
Pigments inorganiques
|
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Nanocrystalline cobalt aluminate spinel, CoAl2O4, was prepared via a microwave-assisted solution combustion process applying various mixtures of urea, glycine, and starch as a novel mixed fuel. The effects of starch addition (0, 10, 20, and 30 wt%) on the physical characteristics (e.g. crystallite size and colour) of the blue nano pigments were also investigated. The resultant powders were characterised by means of X-ray diffraction, scanning electron microscopy, electron dispersive X-ray analysis, and CIE L*a*b* colour measurements. The presence of a CoAl2O4 spinel lattice after calcination of precursors at 600 °C was confirmed by X-ray diffraction patterns, and the crystallite sizes were ca. 10–39 nm. Colorimetric data pointed to the formation of bright-blue pigments at low levels of starch addition. Scanning electron microscope images showed that starch enrichment reduced the agglomeration and size of synthesised nanoparticles. |
| Note de contenu : |
- EXPERIMENTAL : 1. Powder synthesis - 2. Characterisation methods
- RESULTS AND DISCUSSION : 1. X-ray diffraction analysis and CIE L*a*b colour measurements - 2. Scanning electron microscope characterisation and electron dispersive X-ray analysis |
| DOI : |
10.1111/cote.12103 |
| En ligne : |
https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12103 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22077 |
in COLORATION TECHNOLOGY > Vol. 130, N° 5 (10/2014) . - p. 376-379
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