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Preparation of Microcapsules Containing PC-88A with Interconnected Spherical Pores and Their Extraction Properties of Zn(II)
http://hdl.handle.net/10458/3719
http://hdl.handle.net/10458/3719ffcd1b11-2a36-4eb2-b3dc-e09d22acd428
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
1442shiomori.pdf (2.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2012-05-31 | |||||
| タイトル | ||||||
| タイトル | Preparation of Microcapsules Containing PC-88A with Interconnected Spherical Pores and Their Extraction Properties of Zn(II) | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Matsushita, Asuka
× Matsushita, Asuka× Sana, Takashi× Kiyoyama, Shiro× Yoshida, Masahiro× Shiomori, Koichiro |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | 2-Ethylhexyl phosphonic acid mono-2-ethylhexyl ester （PC-88A）, which is an effective extractant of Zn（II）, was microencapsulated by in situ polymerization in a W/O/W emulsion system. Divinylbenzene was used as the wall material and polymerized in the organic phase by free radical polymerization. Microcapsules with large interconnected-spherical pores were successfully prepared. The pore size and the diameter of the microcapsules increased with increasing NaCI concentration in the inner aqueous phase. The diameter of the microcapsules was almost constant at around230 μm and was independent of the concentration of PC-88A in the organic phase. The entrapment efficiency of PC-88A in the microcapsules was higher than 80% for all preparation conditions. The extraction of Zn（II） using the microcapsules containingPC-88A sharply increased at pH values greater than 2. Zn（II） extracted in the microcapsules was successfully back-extracted at pH values less than 2. It was confirmed that two molecules of PC-88A reacted with one Zn（II） ion by quantitative analysis of the relationship between the maximum amounts of Zn（II） extracted and the amount of PC-88A encapsulated in the microcapsules. The extraction rate of Zn（II）was accelerated by the formation of interconnected-spherical pores inside the microcapsules. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : Solvent Extraction Research and Development, Japan 巻 18, p. 123-135, 発行日 2011-05 |
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| 出版者 | ||||||
| 出版者 | Japan Association of Solvent Extraction | |||||
| 言語 | en | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
