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Journal of Petroleum Science and Technology، جلد ۱۳، شماره ۴، صفحات ۴۵-۵۲
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Modification of Sodium Montmorillonite: Dependence of Silylation on Premixing Process |
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| چکیده انگلیسی مقاله |
Organic modification of hydrophilic sodium montmorillonite (Na+-MMT) is important for improving its compatibility with organic polymers. In the present research, (3-aminopropyl)triethoxysilane (APTES) was used to modify Na+-MMT. The effects on the basal spacing of Na+-MMT upon the premixing process with different mixing techniques were examined in detail. The resultant products (S-Mts) were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TGA), and Fourier transform infrared (FTIR) spectroscopy. For monitoring the grafting process, FTIR was used, while the percentage of the loaded silane was calculated using TGA. Furthermore, XRD measurements were carried out to evaluate the increase in the d-spacing. The amount of grafted silane increases when a suitable premixing process, such as the mechanical mixer and homogenizer, is chosen. The same beneficial effects were observed on d-spacing, as it increases when using the mechanical mixer and homogenizer. This study demonstrates that the degree of grafting and d-spacing of the grafted products strongly depends on the mixing process before the silylation reaction. This is very important for the synthesis and application of polymer nanocomposites containing silylated layered silicate minerals. |
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| کلیدواژه‌های انگلیسی مقاله |
Sodium montmorillonite,
Silylation,
Premixing process,
Grafting reaction |
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| نویسندگان مقاله |
Milad Fardi |
Chemical, Polymer and Petrochemical Technology Development Research Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Jamal Aalaie |
Chemical, Polymer and Petrochemical Technology Development Research Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Sanam Sepehri |
Chemical, Polymer and Petrochemical Technology Development Research Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
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| نشانی اینترنتی |
https://jpst.ripi.ir/article_1394_35570638d3d8606305b93f261de86320.pdf |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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