| Titre : |
Barrier and mechanical properties of water-based polyurethane-coated hydroentangled cotton nonwovens |
| Type de document : |
texte imprimé |
| Auteurs : |
Partha Sikdar, Auteur ; Shafiqul Islam, Auteur ; A vik Dhar, Auteur ; Gajanan Bhat, Auteur ; Doug Hinchliffe, Auteur ; Brian Condon, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 1255-1267 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Absorption
Caractérisation
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Elasticité
Enduction textile
Hydroenchevêtrement (nontissés)
Matériaux -- Propriétés barrières
Nontissés
Nontissés -- Propriétés mécaniques
Polymères en émulsion
Polyuréthanes
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Imparting new functionalities by means of coating on textiles is a step to widen the span of their characteristics and potential applications in different dimensions. Water-based polyurethanes (PU) offer unique and striking mechanical and functional features that have driven strong interest in their utility for various applications while also matching environmental sustainability needs. This research investigates the effects of PU coating on hydroentangled cotton nonwovens. The coated and uncoated nonwovens produced by various combinations were evaluated for their structure and physical properties such as fiber structure, tensile strength, water contact angle, surface energy, air permeability, pressure drop, and water absorbency. The changes in surface structure of nonwovens after coating were analyzed through scanning electron microscope. Additionally, stretchability and stretch recovery of the webs showed improvement as determined by cyclic loading and unloading tests. Cotton nonwovens generally have poor recovery due to the nature of the fiber and the web structure with very low stored energy. The results show that integration of PU on cotton nonwovens can be a promising approach to impart elasticity to cotton webs with endowed tensile strength and vast increase in recovery characteristics. |
| Note de contenu : |
- EXPERIMENTAL STUDIES : Preparation of cotton webs - Coating of cotton webs with PU - Characterization
- RESULTS AND DISCUSSION : Barrier properties - Tensile Properties - Stretchability and stretch recovery - Water absorbency - Water contact angle and surface energy - Scanning electron microscope (SEM)
- Table 1 : Process parameters of hydroentangled cotton nonwovens
- Table 2 Physical properties of water-based polyurethane
- Table 3 Details of water-based PU-coated cotton nonwovens |
| DOI : |
https://doi.org/10.1007/s11998-021-00609-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-021-00609-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38052 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 4 (07/2022) . - p. 1255-1267
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