Synthesis of Biodegradable Mixing-Polymer as Coating Material for Controlled-Release Urea Fertilizer

Abstract:

The biodegradable mixing-polymer as low cost, environmentally friendly coating material for controlled-release urea fertilizer was synthesized by borax crosslinked phosphated distarch phosphate (PDSP)/polyvinyl alcohol (PVA) and polyacrylic acid (PAA) via pan coating method. The physico-chemical characteristics of biodegradable mixing-polymer were confirmed by FTIR, TGA and SEM techniques. The kinetics of urea release were also carefully investigated in water and soil. It’s been found that a uniform layer with better bonding structure was created on surface of the mixing-polymer PDSP/PVA-PAA and the time released 70% urea reached 6 hours in water and more than 27 days in soil.

• Periodical: Advanced Materials Research (Volume 1152)
• Pages: 43-51
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1152.43
• Online since: April 2019
• Authors: Huu Trung Nguyen, Van Dat Doan*, Van Dung Trinh
• Keywords: Biodegradable Mixing-Polymer, Coating Material, Controlled-Release Urea Fertilizer, Pan Coating, Phosphated Distarch Phosphate

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