聚乙烯醇与淀粉配比对缓释肥料养分释放和吸水行为的影响

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Materials & Product Technology Pub Date : 2023-01-01 DOI:10.1504/ijmpt.2023.130198

Ayushman Panda, Shyama Prasad Mohanty

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引用次数: 1

摘要

在本研究中，聚乙烯醇(PVA)与淀粉混合，以限制肥料颗粒在聚合物基质中。采用溶液浇铸法将氮磷钾肥料颗粒嵌入聚合物基质中。研究了聚乙烯醇与淀粉的重量比分别为7:3、5:5和3:7。用光学显微镜对样品的形貌进行了研究。组分中PVA的含量越高，膜的表面越光滑。制备的样品分别通过离子电导率测量和吸水试验进行表征，以估计肥料释放率和保水能力。PVA含量高的样品在蒸馏水浸泡24 h后，离子电导率的变化较小，因此营养物质的释放也较低。三种样品中，PVA与淀粉之比为5:5的组分表面均匀，保水性能好，缓释性能好。

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Effect of polyvinyl alcohol to starch ratio on the nutrient release and water absorption behaviour of slow release fertiliser

In the present study, polyvinyl alcohol (PVA) has been blended with starch to confine the fertiliser particles in the polymer matrix. NPK fertiliser particles have been embedded in polymer matrix by a solution casting method. Different weight ratios of PVA to starch, that are 7:3, 5:5 and 3:7 have been investigated. Morphologies of the samples have been studied using optical microscopy. Higher content of PVA in composition leads to a smooth surface of film. The prepared samples have been characterised by ionic conductivity measurements and water absorption tests to estimate the fertiliser release rate and water retention capacity, respectively. Sample containing higher content of PVA shows lower change in ionic conductivity and hence, lower release of nutrients in 24 h of soaking in distilled water. Among the three samples, composition having PVA to starch ratio of 5:5 shows uniform surface, higher water retention characteristics and thereby, better slow release capabilities.

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来源期刊

International Journal of Materials & Product Technology 工程技术-材料科学：综合

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

8 months

期刊介绍： The IJMPT is a refereed and authoritative publication which provides a forum for the exchange of information and ideas between materials academics and engineers working in university research departments and research institutes, and manufacturing, marketing and process managers, designers, technologists and research and development engineers working in industry.