The present study deals with the formation of a phosphorylated polyvinyl alcohol (PPVA)-Aluminum Phosphate (AlPO₄) nanocomposite, changing the pH solution under the two-step process involving the phosphorylation of polyvinyl alcohol (PVA) followed by the conjugation with AlPO₄. The composite was formed by varying the pH of the solution in the range of 7–12 and the reflected changes in the product’s morphology, crystallinity, surface nature, thermal stability, etc. were recorded using FESEM, XRD, FTIR, UV-Vis spectroscopy, TGA, etc. From the analysis, it was found that the particles formed with two different sizes of the probed pH, and at pH 10 they were homogeneously distributed. In addition, the morphology of the PPVA-AlPO₄ composite also seems to be altered with respect to the pH and this is due to the differences in the amount of H⁺ and OH⁻ anions. Thus, from the overall analysis, it can be indicated that pH 10 needs to be maintained for the formation of a spherical shape and uniformly distributed PPVA-AlPO₄ nanocomposite.

中文翻译：

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反应pH对磷酸化聚乙烯醇-磷酸铝纳​​米复合材料理化特性的影响

本研究涉及磷酸化聚乙烯醇 (PPVA)-磷酸铝 (AlPO ₄ ) 纳米复合材料的形成，在涉及聚乙烯醇 (PVA) 磷酸化然后与 AlPO ₄共轭的两步过程中改变 pH 溶液. 通过在 7-12 范围内改变溶液的 pH 值形成复合材料，并使用 FESEM、XRD、FTIR、UV-Vis 光谱记录产品形态、结晶度、表面性质、热稳定性等的反射变化、TGA 等。从分析中发现，所形成的颗粒具有两种不同大小的探测 pH 值，在 pH 值为 10 时它们均匀分布。此外，PPVA-AlPO ₄的形貌复合材料的 pH 值似乎也发生了变化，这是由于 H ⁺和 OH ^-阴离子的数量不同。因此，从整体分析可以看出，需要保持pH 10 才能形成球形和均匀分布的PPVA-AlPO ₄纳米复合材料。