Data/hora: 21/06/2024 04:12:07

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	02/10/2023	
Data da última atualização: 	15/01/2024	
Autoria: 	VALLE, S. F.; GIROTO. A. S.; RIBEIRO, C.	
Afiliação: 	Department of Chemistry, Federal University of São Carlos; Embrapa Instrumentation; CAUE RIBEIRO DE OLIVEIRA, CNPDIA.	
Título: 	Unveiling the Role of Polysulfide Matrices in Phosphate Diffusion for Controlled Release Fertilizers.	
Ano de publicação: 	2023	
Fonte/Imprenta: 	ACS Applied Polymer Materials, vol. 5, 2023.	
Páginas: 	6941–6949	
ISSN: 	2637-6105	
DOI: 	https://doi.org/10.1021/acsapm.3c00988	
Idioma: 	Inglês	
Conteúdo: 	Phosphate rock and struvite (ST) dispersion in a polysulfide (PS) matrix offers a sustainable alternative for phosphorous (P) fertilization, as it can favor P dissolution and control its release, while also being a sulfur fertilizer. Herein, we discuss the PS permeability mechanism as well as the chemical and structural factors that affect P diffusion from PS composites. SEM and contact angle showed that P particles increased PS porosity and hydrophilicity, which favors P release. Within 7 days in soil, Fe-oxide papers revealed that the Pdiffusion diameter was only 0.3 cm for ST against up to 2.3 cm from the PS composite. In 28 days, available P in soil from the apatite increased from 6 to up to 79 mg/dm3 due to its dispersion in PS. In the adapted Ussing Chamber permeability test, PS displayed higher affinity toward anion permeability and a negligible cation diffusion, which might contribute to the gradual P release and higher availability in soil.	
Palavras-Chave: 	Controlled release; Inverse vulcanization; Polysulfide.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (18286-1) - UPC - AP - DD - PROCI.23/93 -  - 2023/98 - DIS