Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 159, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2022.107030
Keywords
Polymer-matrix composites (PMCs); Biocomposite; 3-D Printing; Compression moulding
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An innovative green composite was produced by adding NPK fertilizer flour to a biodegradable polymer, which can regulate the release rate of fertilizers and solve the ecological problems caused by excessive fertilization.
Excessive fertilization causes ecological problems due to leaching issues. To solve this problem and promote agriculture sustainability an innovative green composite for controlled release fertilizers was produced by adding NPK fertilizer flour to a biodegradable polymer with or without Opuntia Ficus Indica (OFI) particles. Six formulations were produced and employed for the fabrication of devices both for compression molding and fused deposition modeling (FDM). Both fillers displayed a good dispersion in the composites, excellent adhesion with the polymeric matrix and effectively acted as reinforcement. The decrease of NPK release rate (up to 30 days) was achieved using whole composites prepared. By appropriately selecting the dimension of the particles, the addition of OFI and the production technique, was possible to modulate the NPK release rate: FDM samples containing fine particles of OFI and NPK displayed the fastest release. Release data were fitted according to Peppas-Korsmeyer model to understand the release mechanism.
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