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首页> 外文期刊>Journal of Polymers and the Environment >PHB and Montmorillonite Clay Composites as KNO_3 and NPK Support for a Controlled Release
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PHB and Montmorillonite Clay Composites as KNO_3 and NPK Support for a Controlled Release

机译：PHB和MONTMORILLONITE粘土复合材料作为KNO_3和NPK支持控制释放

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摘要

In order to improve nutrient uptake by plants and at the same time decrease losses by leaching, polymeric compounds based on biodegradable poly(3-hydroxybutyrate) (PHB) and montmorillonite clay (MMt) were melt processed with KNO3 and NPK fertilizers (Fert). We present a comprehensive analysis of releasing profile of the potassium (K+), nitrogen (NH4+ and NO3-) and phosphorous (PO43-) from PHB/MMt/fertilizer at 90/0/10, 50/0/50, 80/10/10, 40/10/50, 25/25/50 formulation. The amount and type of the fertilizer and the presence of clay delineated the release of the cations and anions from the matrix. Cations released faster than anions through MMt composites due to cations-MMt interactions and its diffusion through MMt phase. The nutrients delivery from composites was lower than pure fertilizer. Composites formulations with smaller amount of PHB and MMt (25wt%) were enough to encapsulate the fertilizer and delay the ions releasing. Further, the simple method of preparation also attains the sustainability of the whole process.
机译：为了改善植物的营养吸收，同时通过浸出减少损耗，基于可生物降解的聚（3-羟基丁酸酯）（PHB）和蒙脱石粘土（MMT）的聚合物化合物用KNO3和NPK肥料（FERT）熔化加工。我们在90/0/10,00 / 10,080 / 10，80/10的释放来自PHB / MMT /肥料的钾（K +），氮（NH4 +和NO3-）和磷（PO43-）的剥离（PO43-）的综合分析/ 10,40 / 10/50，25/25/50配方。肥料的量和类型和粘土的存在描绘了来自基质的阳离子和阴离子的释放。由于阳离子-MMT相互作用，阳离子通过MMT复合材料的阴离子释放得更快，并且通过MMT相互作用和其扩散。从复合材料递送的营养物质低于纯肥料。具有较少量的PHB和MMT（25wt％）的复合材料足以包封肥料并延迟离子释放。此外，简单的制备方法也达到了整个过程的可持续性。

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