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首页> 外文期刊>Journal of Applied Polymer Science >Organic silicone-modified transgenic soybean oil as bio-based coating material for controlled-release urea fertilizers
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Organic silicone-modified transgenic soybean oil as bio-based coating material for controlled-release urea fertilizers

机译：有机硅改性的转基因大豆油作为生物基包衣材料，用于控释尿素肥料

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Novel bio-based polyurethanes (PUs) were synthesized from transgenic soybean oil (TSBO) and then modified with hydroxyl-terminated dimethyl silicone (HTMS) to coat urea prills for controlling nitrogen (N) release. Different kinds of coated ureas were prepared from these hydrophobic PUs. Physicochemical properties of the coatings were characterized in the laboratory. The N release characteristics of the PU-coated ureas (PCUs) in water were determined at 25 degrees C. Experimental results showed that the presence of HTMS in the PUs reduced the coating porosity, increased the water-contact angle of the coating material, and thus slowed the nutrient release from the PCUs. These results suggested that HTMS improved the structure and properties of coating materials for controlled release. These findings showed that bio-based PUs derived from TSBOs made excellent coating material, particularly after HTMS modification, and thus may replace petroleum-based PUs for controlled-release fertilizers. (C) 2016 Wiley Periodicals, Inc.
机译：由转基因大豆油（TSBO）合成新型生物基聚氨酯（PU），然后用羟基封端的二甲基有机硅（HTMS）进行改性，以覆盖尿素颗粒以控制氮（N）的释放。由这些疏水性PU制备了不同种类的涂覆脲。在实验室对涂层的物理化学性质进行了表征。在25°C下测定PU涂覆的尿素（PCU）在水中的氮释放特性。实验结果表明，PU中HTMS的存在降低了涂层的孔隙率，增加了涂料与水的接触角，并且因此减缓了PCU的养分释放。这些结果表明HTMS改善了控释包衣材料的结构和性能。这些发现表明，源自TSBO的生物基PU制成了优异的包衣材料，尤其是在HTMS改性后，因此可以代替石油基PU用作控释肥料。 （C）2016威利期刊公司

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