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Type of publication: Straipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)
Field of Science: Aplinkos inžinerija / Environmental engineering (T004)
Author(s): Treinytė, Jolanta;Gražulevičienė, Violeta;Paleckienė, Rasa;Ostrauskaitė, Jolita;Česonienė, Laima
Title: Biodegradable Polymer Composites as Coating Materials for Granular Fertilizers
Is part of: Journal of Polymers and the Environment. New York : Springer, Vol. 26, Iss. 2 (2018)
Extent: p. 543–554
Date: 2018
Keywords: Composites;Environment protection;Fertilizer;Encapsulation
Abstract: The composites consisting of poly(vinyl alcohol), horn meal, rapeseed cake, glycerol and phosphogypsum were proposed for the encapsulation of mineral fertilizers. Poly(vinyl alcohol) was used as a binder. The other components making ca. 70% of the mass of the composites were waste materials or by-products. They contain phosphorus, nitrogen, calcium, potassium and sulphur, which are useful nutrients for plants. The effect of the amount of glycerol and of the composition of the mixture of the fillers on the mechanical, sorption properties, water vapour permeability, solubility in water, dimensional stability of the composite films was studied. The addition of phosphogypsum and increase of the concentration of glycerol in the composites lead to the decrease of the tensile strength, water vapour permeability and to the increase of elongation at break and of the solubility of the composite films in water. The composites prepared were used for encapsulation of fertilizers. It was established that encapsulation resulted in the increase of the time of release of the fertilizers. In addition, encapsulation improved mechanical properties of the fertilizers. The fertilizer granules were coated with composite films and tested in the cultivation of tomato sprouts. They showed considerable positive effect on the development of the roots of the plants
Affiliation(s): Kauno technologijos universitetas
Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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