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Use of biodegradable biopolymers and nanocellulose for application in programmable fertilizers release

Grant number: 17/24595-4
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): May 01, 2018
Effective date (End): March 31, 2022
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Roselena Faez
Grantee:Débora França
Host Institution: Centro de Ciências Agrárias (CCA). Universidade Federal de São Carlos (UFSCAR). Araras , SP, Brazil
Associated scholarship(s):18/20585-7 - Use of biodegradable biopolymers and nanocellulose for application in programmable fertilizers release, BE.EP.DR


Controlled-Release Fertilizer (CRF) research has grown in recent decades due to the innumerable advantages to Agriculture, such as increasing the efficiency of fertilizer use, providing regular and continuous level for plant nutrition over time. However, the use of non-biodegradable polymers as matrix to cover and encapsulate CRF has been debated because of the residue generated. The use of biodegradable biopolymers as matrix in these materials has been of great importance in solving this problem. The present study aims the preparation and characterization of CRFs based on natural and biodegradable polymers. The material will be prepared in two steps. First, the fertilizer will be encapsulated by the cellulose/nanocellulose and modified nanocellulose (cellulose-fertilizer, CF) using spray drying technique. Then, CF will be secondly coated by a polymer matrix of thermoplastic starch (TPS) and/or poly (3-hydroxybutyrate) (PHB) by thermal process (in Haake rheometer) in order to delay the release of the nutrient. The material obtained will be characterized morphologically, structurally, mechanically and thermally. The nutrient release profile will be evaluated in water and soil. The biodegradation profile of the polymer matrices will also be studied. Nutrient release in situ monitoring will be done by the Time Domain Reflectometry (TDR) technique that evaluates the ionic movement in particulate systems such as soil. As a result, an eco-friendly CFR must be obtained which will gradually release the nutrient to the soil and be biodegradable after, a programmable fertilizers release. (AU)

Articles published in Pesquisa para Inovação FAPESP about the scholarships:
Researchers use cellulose to develop slow-release fertilizer and a self-fertilizing propagation pot 
News published in Agência FAPESP Newsletter about the scholarship:
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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ANGELO, LUCIANA MORETTI; FRANCA, DEBORA; FAEZ, ROSELENA. Biodegradation and viability of chitosan-based microencapsulated fertilizers. Carbohydrate Polymers, v. 257, . (17/24595-4, 19/02535-5)
CHIAREGATO, CAMILA GRUBER; FRANCA, DEBORA; MESSA, LUCAS LUIZ; PEREIRA, TAMIRES DOS SANTOS; FAEZ, ROSELENA. review of advances over 20 years on polysaccharide-based polymers applied as enhanced efficiency fertilizer. Carbohydrate Polymers, v. 279, . (14/06566-9, 19/02793-4, 18/03235-2, 17/24595-4, 19/02535-5, 17/03980-7)
FRANCA, DEBORA; DE BARROS, JOAO RICARDO SHIBATA; FAEZ, ROSELENA. Spray-dried cellulose nanofibrils microparticles as a vehicle for enhanced efficiency fertilizers. Cellulose, v. 28, n. 3, . (19/02535-5, 17/24595-4)
FRANCA, DEBORA; ANGELO, LUCIANA M.; SOUZA, CLAUDINEI F.; FAEZ, ROSELENA. Biobased Poly(3-hydroxybutyrate)/Starch/Cellulose Nanofibrils for Nutrients Coatings. ACS APPLIED POLYMER MATERIALS, v. 3, n. 6, p. 3227-3237, . (19/02535-5, 17/24595-4)

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