Design and Application of Multi-layer Starch-Latex Blends as Phosphorous Delivery System

The search for highly productive agriculture has considerably increased the use of fertilizers, becoming a worrying source of environmental and health risks. This work reports the preparation and characterization of a controlled phosphorus release system using a multi-layer blend of starch and latex...

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Bibliographic Details
Published in:Journal of polymers and the environment 2021-06, Vol.29 (6), p.2000-2012
Main Authors: Góes, Mariana Moraes, Merci, Aline, Andrello, Avacir Casanova, Yamashita, Fabio, de Carvalho, Gizilene Maria
Format: Article
Language:English
Subjects:
Ammonium
Ammonium phosphates
Chemistry
Chemistry and Materials Science
Environmental Chemistry
Environmental Engineering/Biotechnology
Fertilizers
Health risks
Industrial Chemistry/Chemical Engineering
Infrared analysis
Infrared spectroscopy
Latex
Materials Science
Mechanical properties
Multilayers
Original Paper
Phosphorus
Polymer Sciences
Starch
Thermogravimetric analysis
Transport properties
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Summary:The search for highly productive agriculture has considerably increased the use of fertilizers, becoming a worrying source of environmental and health risks. This work reports the preparation and characterization of a controlled phosphorus release system using a multi-layer blend of starch and latex, in different proportions. Infrared spectroscopy and thermogravimetric analysis were used to evaluate the incorporation and interaction of phosphorus with the polymeric matrix. The mechanical properties, and transport properties were evaluated as a function of the addition of latex and mono-ammonium phosphate (MAP) to the starch. The Zero order, Peppas-Sahlin and Korsmeyer-Peppas kinetic models were applied. The results showed that phosphorus is released between 58% to 80% in the analyzed time. The release mechanism depends on the blend composition and the amount of incorporated MAP, indicating that it is possible to adapt the material formulation to meet specific soil needs. Graphic Abstract
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-020-02018-w