Spray-dried chitosan/nanocellulose microparticles: synergistic effects for the sustained release of NPK fertilizer
| Autor: | Lucas Luiz Messa, Roselena Faez |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Polymers and Plastics
02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Peroxide 0104 chemical sciences Nanocellulose Chitosan chemistry.chemical_compound chemistry Chemical engineering Spray drying engineering Acid hydrolysis Fertilizer Cellulose 0210 nano-technology Bagasse |
| Zdroj: | Cellulose. 27:10077-10093 |
| ISSN: | 1572-882X 0969-0239 |
| Popis: | Enhanced efficiency fertilizers help to provide desirable nutrients to plants and release them in a prolonged time. The public concern about environmental protection and efficiency in the use of resources has increased the need to produce eco-friendly and high-performance products. In this work, we report the preparation and properties of the sustained release of spray-dried microparticles based on two biopolymers, chitosan, and nanocellulose. Cellulose rich solid was isolated from waste sugarcane bagasse by chlorine-free alkali peroxide procedure, yielding solids at 45.2%. Nanocellulose with sulfate groups attached on its surface was obtained by acid hydrolysis, and then it was incorporated into chitosan (CS) and NPK fertilizer solution, followed by spray drying to yield microparticles. The CS microparticles caused a decrease in the initial release rate of NPK, which resulted in extended-release of the entrapped nutrients (around 2 h). The incorporation of 10 wt.% nanocellulose to microparticles provided the most significant reduction on fertilizer release rate within 5 h. The work demonstrates the potential use of sulfated nanocellulose in biopolymeric matrices to design enhanced fertilizer release systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink