| Titre : |
Controlled fertilizer release via tunable poly(vinyl alcohol)/ammonium sulfate-coated nonwoven materials |
| Type de document : |
texte imprimé |
| Auteurs : |
Ilhan Özen, Auteur ; Gamze Okyay, Auteur ; Ulaş Abdullah, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 93-102 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Alcool polyvinylique
Engrais organiques
Glutaraldéhyde
Nontissés
Revêtement de surface
Sulfate d'ammonium
Système de libération contrôlée (technologie)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this study, nonwoven fabrics were coated with two different ammonium sulfate fertilizer loadings (27.75% and 55.50%) by using two different poly(vinyl alcohol) types (high and low molecular weight). The poly(vinyl alcohol) coating amounts were adjusted to 60 and 120 g/m2. In order to study the effect of poly(vinyl alcohol) crosslinking on fertilizer release, a glutaraldehyde (GA) crosslinking agent was used in two different ratios (GA/PVOH ratio: 0.01 or 1). A concentration of 0.01 GA was insufficient for PVOH crosslinking, and water absorption capacity was reduced with increasing poly(vinyl alcohol) and glutaraldehyde loading amount. Fertilizer release was affected mostly by molecular weight and loading amounts of poly(vinyl alcohol) and fertilizer. It was possible to achieve controlled fertilizer release when the nonwoven fabric was coated at 120 g/m2 with high molecular weight poly(vinyl alcohol) containing 55.50% ammonium sulfate fertilizer in the absence of glutaraldehyde. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Methods
- RESULTS AND DISCUSSION : Morphology - FTIR - Gel fraction - Dynamic and equilibrium water absorption capacity - Ammonium nitrogen release |
| DOI : |
10.1007/s11998-018-0103-2 |
| En ligne : |
https://link.springer.com/article/10.1007/s11998-018-0103-2 |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31968 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 93-102
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