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xfgzju木虫 (正式写手)
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[求助]
本人写的英语，请专家修改
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| CTAB molecules consists of two parts: water molecule has a strong affinity for the positively charged water head and water molecules with smaller affinity for hydrophobic tail. When CTAB concentration increases, CTAB molecules through its own assembly process and the hydrocarbon chain to form micelles. The surface of the micelle positively charged. After adding phosphate solution, due to the strong electrostatic attraction, the anion (for example, PO43-, HPO32-) attracted to the surface of micelles. It is reported that the CTA + and PO43- with the same tetrahedron structure, which makes them compatible with each other on the stereochemical interactions. The CTA + PO43- compound micelle ACTS as the nucleation center. Therefore, when the Ca2+ in solution, through the electrostatic attraction of PO43- combined with compound micelle surface immediately.Therefore, the change of the surface area and pore volume, show that CTAB concentration for good dispersion and the importance of uniform size. |
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genhunter
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爱与雨下: 金币+1 2017-01-02 07:42:09
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CTAB molecules consists of two parts: hydrophilic head group with a positively charged that has associated water molecules and a hydrophobic tail. [这句话是多余的] When the concentration about its critical micelle concentration(CMC), CTAB molecules self-assemble with the hydrocarbon chains to form micelles. The surface of the micelle is positively charged. Adding a phosphate solution, which contains anionic ions, such as PO43-, HPO32-, to CATB micelles, results in the formation of a phosphate coated CAT micelles, due to strong electrostatic attractions. It is reported that the CTA + and PO43- with the same tetrahedron structure, which makes them compatible with each other on the stereochemical interactions[这句描述对吗？这么强的电荷作用，stereochemisty还管用吗？]. The PO43- coated CTAB micelle acts as a nucleation center, when Ca2+is added, it binds immediately to PO43- ions on micelle surface. [Therefore, the change of the surface area and pore volume, show that CTAB concentration for good dispersion and the importance of uniform size.] 这句话没写完 |
2楼2017-01-01 21:14:04
genhunter
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3楼2017-01-02 08:59:07
genhunter
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4楼2017-01-02 09:28:33
cornell-grad
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| CTAB molecules consists of two parts: charged water head and hydrophobic tail. With the increase of its concentration, CTAB molecules assemble process, which helps the hydrocarbon chain forms micelles. As a result, the surface of the micelle is positively charged. In contrast, adding phosphate solution stimulates the anion (for example, PO43-, HPO32-) is attracted to the surface of micelles with the strong electrostatic affinity. The same tetrahedron structure between CTA + and PO43- makes them compatible with each other on the stereochemical interactions and thus CTA + PO43- compound micelle ACTS become the nucleation center. If the Ca2+ in solution, PO43- will combine with compound micelle surface immediately. |
5楼2017-01-02 11:33:27