Investigation of slow release of urea from biodegradable single- and double-layered hollow nanofibre yarns
Article
Article Title | Investigation of slow release of urea from biodegradable single- and double-layered hollow nanofibre yarns |
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ERA Journal ID | 201487 |
Article Category | Article |
Authors | Javazmi, Leila (Author), Low, Tobias (Author), Ash, Gavin (Author) and Young, Anthony (Author) |
Journal Title | Scientific Reports |
Journal Citation | 10 (1) |
Article Number | 19619 |
Year | 12 Nov 2020 |
Publisher | Nature Publishing Group |
Place of Publication | United Kingdom |
ISSN | 2045-2322 |
Digital Object Identifier (DOI) | https://doi.org/10.1038/s41598-020-76395-6 |
Web Address (URL) | https://www.nature.com/articles/s41598-020-76395-6 |
Abstract | Urea is the most common form of nitrogenous fertiliser. Recently, research has focused on the development of delivery systems to prolong fertiliser release and prevent fertiliser loss through leaching and volatilization. This study investigates and compares single- and double-layered hollow nanofibrous yarns as novel delivery systems to encapsulate and release urea. Single-layered hollow poly L-lactic acid (PLLA) nanofibre yarns loaded with urea fertiliser were fabricated using a customized electrospinning. Double-layered hollow nanofibre yarns were produced by electrospinning polyhydroxybutyrate (PHB) nanofibres as an outer layer, with urea-impregnated PLLA nanofibres as the inner layer. Scanning electron microscopy (SEM) with an energy-dispersive spectroscopy (EDS) was used to characterize the morphology of hollow electrospun nanofibre yarns. A total nitrogen instrument (TNM-1) was used to study the urea release from single- and double-layered hollow nanofibres yarn in water. A Carbon:Nitrogen (CN) elemental analyser determined encapsulated nitrogen in PLLA nanofibres samples. Results indicated that urea-impregnated double-layered hollow nanofibre yarns significantly started nitrogen releasing at much lower amount during first 12 h compared to single-layered hollow nanofibre yarns (P value = 0.000). In conclusion, double-layered hollow nanofibre yarn has potential as an effective alternative to current methods for the slow release of fertilisers and other plant-required chemicals. |
Keywords | hollow nanofibre yarns, slow release, urea, electrospinning |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401699. Materials engineering not elsewhere classified |
300499. Crop and pasture production not elsewhere classified | |
401805. Nanofabrication, growth and self assembly | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Mechanical and Electrical Engineering |
Centre for Crop Health | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5z95/investigation-of-slow-release-of-urea-from-biodegradable-single-and-double-layered-hollow-nanofibre-yarns
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