材料科学
聚氨酯
涂层
肥料
可再生能源
超疏水涂料
纳米技术
复合材料
化学工程
有机化学
电气工程
工程类
化学
作者
Jiazhuo Xie,Yuechao Yang,Bin Gao,Yongshan Wan,Yuncong Li,Jing Xu,Qinghua Zhao
标识
DOI:10.1021/acsami.7b02244
摘要
The development of efficient biobased controlled-release fertilizers has captured much research attention because of the environmental concerns and food scarcity problems. In this work, a biomimetic superhydrophobic biobased polyurethane-coated fertilizer (SBPF) was successfully fabricated by increasing surface roughness and reducing surface energy of polyurethane (PU) coating. The green PU coating was synthesized from low-cost, biodegradable, and renewable cottonseed oil. The nutrient release longevity of SBPF revealed 2-fold enhancement compared with the normal biobased PU-coated fertilizer (BPF). The significant improvement of nutrient release characteristics can be attributed to the atmosphere “outerwear” which ensured the nonwetting contact of water with superhydrophobic surfaces in gas state instead of in liquid state. The new concept introduced in this study can inform the development of the next generation of biobased controlled release fertilizers.
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