Preparation and Characterization of Environmentally Friendly Controlled Release Fertilizers Coated by Leftovers-Based Polymer

Processes

Cong Jia¹  Panfang Lu¹  Min Zhang² 

[1] Food Safety Analysis and Test Engineering Technology Research Center of Shandong Province, College of Chemistry and Material Science, Shandong Agricultural University, Tai’an 271018, China;National Engineering Research Center for Slow/Controlled Release Fertilizers, National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Resources and Environment, Shandong Agricultural University, Tai’an 271018, China;

关键词: leftovers;    bio-based polyurethane;    controlled release fertilizers;    environment-friendly;   

DOI  :  10.3390/pr8040417

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown