| Titre : |
Tone in tone dyeing : attempt to use dye encapsulated silica nanospheres in leather dyeing |
| Type de document : |
texte imprimé |
| Auteurs : |
Sathya Ramalingam, Auteur ; Jonnalagadda Raghava Rao, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 400-408 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Colloides
Colorants
Colorimétrie
Cuirs et peaux -- Teinture
Encapsulation
Evaluation
Granulométrie
Microscopie électronique en transmission
Nanoparticules
Potentiel zeta
Résistance à l'abrasion
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Solidité de la couleur
Spectres d'absorption
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
A commercial leather dye was encapsulated into silica by simple microemulsion technique and applied as dyeing agent in leather dyeing process. Comparative studies on the performance of free dye (non-encapsulated) towards encapsulated dye are evaluated. The resultant formation of nanospheres contain dye inside the silica matrix was investigated by UV-Visible, TEM (Transmission Electron Microscopy) and DLS (Dynamic Light Scattering) measurement. The confinement effect was identified by the formation of spherical particles of the silica through encapsulation. On whole the spectroscopic studies showed that the formed silica nanospheres are stable enough to utilize as dyeing agent in leather dyeing process. The performance of encapsulated nanospheres was evaluated by utilizing as dyeing agent for upper and garment leather processing. The dye entrapped inside the silica spheres had better affinity towards the leather as demonstrated by their uniform penetration throughout its cross section and its surface coloring. The dyeing properties of the encapsulated dye were appraised by color and fastness measurement. The results showed that the dyeing characteristics of the experimental leathers were greatly improved by using encapsulated dyes versus their control leathers. Hence the idea of supporting commercial dye on/inside polymeric silica substrate enriched the leather dyeing characteristics and provide the clue for any dye for any substrate.r |
| Note de contenu : |
- MATERIALS AND METHODS : Synthesis of nanocolloids contain dye encapsulated silica nanospheres - Characterization of encapsulated dye containing silica nanospheres - Evaluation of encapsulated dyes in leather dyeing - Photograph of the leather surface and cross section - Measurement of reflectance of coloured leather - Fastness property of coloured leather - Analysis of permeability of leather - Softness measurement of coloured leather
- RESULTS AND DISCUSSIONS : Absorption spectra of dye - TEM - Particle size and zeta potential - Evaluation of encapsulated dye in leather dyeing process of upper and garment leathe rprocessing - Leather photograph - Color coordinates measurement of dyed leathers - Fastness against rub during wet and dry stage - Fullness and softness measurement |
| En ligne : |
https://drive.google.com/file/d/1iKvIdTTkBrYNwRlFhED6c4PR0CPC4V3M/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31400 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 12 (12/2018) . - p. 400-408
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Tone in tone dyeing : attempt to use dye encapsulated silica nanospheres in leather dyeing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)
