Magnetic-Sensitive Nanoparticle Self-Assembled Superhydrophobic Biopolymer-Coated Slow-Release Fertilizer: Fabrication, Enhanced Performance, and Mechanism

• DOI: 10.1021/acsnano.8b09197
• Publication Date: 2019-02-28T21:20:10Z
• Authors: Jiazhuo Xie; Yuechao Yang; Bin Gao; Yongshan Wan; Yuncong C. Li; Dongdong Cheng; Tiqiao Xiao; Ke Li; Yanan Fu; Jing Xu; Qinghua Zhao; Yanfei Zhang; Yafu Tang; Yuanyuan Yao; Zhonghua Wang; Lu Liu
• Keywords: Biopolymer; Micrometer

Although commercialized slow-release fertilizers coated with petrochemical polymers have revolutionarily promoted agricultural production, more research should be devoted to developing superhydrophobic biopolymer coatings superb ability from sustainable and ecofriendly biomaterials. To inform the development of biopolymer-coated (SBSF), mechanism SBSF needs clarified. Here, superior performance, water tolerance, good feasibility for large-scale production was self-assembly fabricated using a simple, solvent-free process. The surfaces uniformly dispersed Fe3O4 magnetic-sensitive nanoparticles (SMNs) were constructed spontaneous migration SMNs toward outermost surface liquid coating materials (i.e., pig fat based polyol polymethylene polyphenylene isocyanate in mass ratio 1.2:1) magnetic field during reaction-curing results revealed that showed longer longevity (more than 100 days) those unmodified excellent durable properties under various external environment conditions. governing clarified by directly observing atmosphere cushion on synchrotron radiation-based X-ray phase-contrast imaging technique. Liquid only contacts top bulges solid (10.9%), air pockets are trapped underneath (89.1%). allows slow diffusion vapor into internal urea core SBSF, which can decrease nutrient release enhance ability. This synthesis through interaction provides strategy fabricate not biobased but also other applications.