| Titre : |
Development of nanocomposites with self-cleaning properties for textile and leather |
| Type de document : |
texte imprimé |
| Auteurs : |
Concepcio Casas, Auteur ; Jordi Bou, Auteur ; Lluis Ollé, Auteur ; Anna Bacardit, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 33-41 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuir
Fluoropolymères
Hydrophobie
Matériaux hybrides
Nanotechnologie
Polymères -- Synthèse
Polymères amphiphiles
Polyuréthanes
Revêtement auto-nettoyant
Silanes
Textiles et tissus
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The main aim of this study is to develop nover rnultifunctional nanotechnology systems that are applied in textile and leather industry processes for the upholstery used on seating for public spaces and vehicles. More specifically, the study seeks to achieve a dirt-free effect using nanostructured coatings that can bath repel dirt and produce a material with self-cleaning properties. To obtain this property, we use polymers for leather finishing polymers and self-assembling technical textile in several nanophases and microphases with a superhydrophobic effect similar to that of the lotus leaf, but with a greater resistance to abrasion. Additionally, in this study we also use hybrid multifunctional polyurethanes, organic-inorganic amphipihilic polymers with hydrophobic, oleophobic, and hydrophilic nanophases and microphases which can spontaneously rearrange on substrates, creating structures that repel both water and dirt.
The study consists of three stages : in i) selecting the most appropriate substances to achieve the self-cleaning effect ; ii) synthesizing nanostructured polymers with elastic properties, hybrid polymers with a fluoropolyurethane base, and the organic part based on self-cross-linking silanes ; iii) assessing the polymers obtained.
To understand the mechanisms of synthesis and action of the nanocomposites, the following characterization techniques have been applied : determination of particle size by means of dynamic light scattering ; determination of contact angle ; and determination of surface roughness.
A total of 25 products were developed. The results indicate that it is possible to produce coatings that give good hydrophobic properties and a self-cleaning effect to leather and textile surfaces. However, when these products are applied as coatings, the appearance and rigidity of the finished leather needs to be further improved. |
| Note de contenu : |
- Synthesis of nanocomposites to obtain a superhydrophobic surface
- Synthesis of nanocomposites with self-cleaning properties
- Characterization of the developed products
- FIGURES : 1. Lotus effect on technical fabrics - 2. Polyester fabric with self-cleaning effect - 3. The particle's hydrodynamic diameter - 4. 40x magnification of the leather surface formed by particles in C16 - 5. 1000x magnification of the leather surface formed by particles in C16 - 6. Structure of product C16 - 7. Analysis of particle size distribution of products C16 and C17 - 8. Analysis contact angle of products C16 and C17 - 9. Analysis of profile distribution of C17 and SEM image on leather - 10. Analysis of profile distribution of C16 and SEM image on leather - 11. SEM images of products C16 and C17
- TABLES : 1. Characteristics of the nanocomposites synthesized to achieve a hydrophobic leather surface - 2. Characteristics of the synthesized nanocomposites with self-cleaning properties - 3. Characteristics of synthesized nanocomposites with antibacterial and dirt-free properties - 4. Equivalent diameter of sphere (volume distribution) - 5. Analysis of contact angle - 6. Average roughness of surface (µm) |
| En ligne : |
https://drive.google.com/file/d/1TO--_k9UehAWGn8wTJXyEW7JJApd1goW/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30012 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 1 (01-02/2018) . - p. 33-41
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Development of nanocomposites with self-cleaning properties for textile and leather in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
