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Evaluation of waterborne coating for controlled - release fertilizer using wurster fluidized bed / Zhao Cong in Industrial & engineering chemistry research, Vol. 49 N° 20 (Octobre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 9644–9647 Titre : Evaluation of waterborne coating for controlled - release fertilizer using wurster fluidized bed Type de document : texte imprimé Auteurs : Zhao Cong, Auteur ; Shen Yazhen, Auteur ; Du Changwen, Auteur Année de publication : 2011 Article en page(s) : pp. 9644–9647 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Fluidized  bed  Fluidization  Fertilization  Fertilizers Résumé : Coating through polymer film to control nutrient release can reduce the nutrient losses and minimize environmental contamination. In this research, the waterborne acrylate latex and additive (cross-linker aziridine) were used to develop coated controlled-release fertilizers by Wurster-type fluidized bed, and the influences of different cross-linker percentage on the coating properties and the nutrient-release profiles were investigated. The results indicated that the waterborne coating coupled with the 2 wt % of cross-linker could effectively decrease the swelling capacity of the membrane to 5.54 ± 0.32% while obtaining a suitable Tg (6.13 °C); the cumulative nutrient-release percentage was significantly improved to around 40% in 9 days at 40 °C. This organic solvent-free coating provided a promising option for the development of coated controlled-release fertilizer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23325783 [article] Evaluation of waterborne coating for controlled - release fertilizer using wurster fluidized bed [texte imprimé] / Zhao Cong, Auteur ; Shen Yazhen, Auteur ; Du Changwen, Auteur . - 2011 . - pp. 9644–9647. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 20 (Octobre 2010) . - pp. 9644–9647 Mots-clés : Fluidized  bed  Fluidization  Fertilization  Fertilizers Résumé : Coating through polymer film to control nutrient release can reduce the nutrient losses and minimize environmental contamination. In this research, the waterborne acrylate latex and additive (cross-linker aziridine) were used to develop coated controlled-release fertilizers by Wurster-type fluidized bed, and the influences of different cross-linker percentage on the coating properties and the nutrient-release profiles were investigated. The results indicated that the waterborne coating coupled with the 2 wt % of cross-linker could effectively decrease the swelling capacity of the membrane to 5.54 ± 0.32% while obtaining a suitable Tg (6.13 °C); the cumulative nutrient-release percentage was significantly improved to around 40% in 9 days at 40 °C. This organic solvent-free coating provided a promising option for the development of coated controlled-release fertilizer. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23325783