1. Preparation and Characterization of Environmentally Friendly Controlled Release Fertilizers Coated by Leftovers-Based Polymer
- Author
-
Min Zhang, Cong Jia, and Lu Panfang
- Subjects
Materials science ,bio-based polyurethane ,Energy-dispersive X-ray spectroscopy ,controlled release fertilizers ,Bioengineering ,02 engineering and technology ,010501 environmental sciences ,engineering.material ,lcsh:Chemical technology ,01 natural sciences ,lcsh:Chemistry ,chemistry.chemical_compound ,Coating ,X-ray photoelectron spectroscopy ,Chemical Engineering (miscellaneous) ,lcsh:TP1-1185 ,Fourier transform infrared spectroscopy ,0105 earth and related environmental sciences ,Polyurethane ,Process Chemistry and Technology ,leftovers ,021001 nanoscience & nanotechnology ,Controlled release ,Isocyanate ,Environmentally friendly ,chemistry ,Chemical engineering ,lcsh:QD1-999 ,environment-friendly ,engineering ,0210 nano-technology - Abstract
In this work, a novel bio-based polyurethane (PU) was synthesized by using a leftovers (SF)-based polyol and isocyanate for controlled release fertilizers (CRFs). Its chemical structure, surface elemental compositions and distribution were examined by Fourier transform infrared (FTIR), energy dispersive spectroscopy (EDX) and a multifunctional imaging electron spectrometer (XPS). The microstructure morphology of CRFs were examined by SEM. The nutrient release behaviors of CRFs were observed in water. The results demonstrated that SF-based PU-coated urea (FPU) had a denser structure and better nutrient releasing ability. Findings from this work indicated that the use of SF as a coating material of environment-friendly CRFs had great potential, and would hopefully be used for horticultural and agricultural applications.
- Published
- 2020