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MEMBRANE CHARGE DISTRIBUTION OF CELLULOSE ACETATE MEMBRANE AROUND THE INTERFACE BETWEEN THE MEMBRANE AND BULK SOLUTION
https://doi.org/10.20840/00000306
https://doi.org/10.20840/00000306ca588773-eec1-424e-9e76-8f5f9a6efb24
名前 / ファイル | ライセンス | アクション |
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MEMBRANE CHARGE DISTRIBUTION OF CELLULOSE ACETATE MEMBRANE AROUND THE INTERFACE BETWEEN THE MEMBRANE AND BULK SOLUTION (493.6 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2020-03-10 | |||||
タイトル | ||||||
タイトル | MEMBRANE CHARGE DISTRIBUTION OF CELLULOSE ACETATE MEMBRANE AROUND THE INTERFACE BETWEEN THE MEMBRANE AND BULK SOLUTION | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | MEMBRANE CHARGE DISTRIBUTION OF CELLULOSE ACETATE MEMBRANE AROUND THE INTERFACE BETWEEN THE MEMBRANE AND BULK SOLUTION | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.20840/00000306 | |||||
ID登録タイプ | JaLC | |||||
著者 |
高木, 良助
× 高木, 良助× Takagi, Ryosuke× Hori, Midori× Gotoh, Keiko× Tagawa, Mieko× Nakagaki, Masayuki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To obtain an information on the membrane charge around the interface, we measured the membrane potential and ζ-potential of cellulose acetate in aqueous NaCl solution at 34℃. The ζ-potential was negative but nearly equal to zero. The Donnan potential obtained from the analysis of the membrane potential was also negative, but the absolute magnitude was much larger than ζ-potential. As the results of analysis, it was found that the cellulose acetate membrane itself had no fixed charge and the effective membrane charge was due to the Cl^- ions adsorbed by the membrane. The saturated adsorption amount expressed in surface density and the adsorption coefficient within the membrane were the same as those at the surface. It was, therefore, concluded that even if the surface density of adsorbed ions within the membrane is as small as at the membrane surface, the membrane charge strongly affects the Donnan potential. This is because the Donnan potential was affected not by the charge density expressed in surface density but by the charge density in volume density. Within the membrane, the charge density in volume density becomes very large since the pore radius is extremely small, even if the adsorbed amount in surface density was small. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | To obtain an information on the membrane charge around the interface, we measured the membrane potential and ζ-potential of cellulose acetate in aqueous NaCl solution at 34℃. The ζ-potential was negative but nearly equal to zero. The Donnan potential obtained from the analysis of the membrane potential was also negative, but the absolute magnitude was much larger than ζ-potential. As the results of analysis, it was found that the cellulose acetate membrane itself had no fixed charge and the effective membrane charge was due to the Cl^- ions adsorbed by the membrane. The saturated adsorption amount expressed in surface density and the adsorption coefficient within the membrane were the same as those at the surface. It was, therefore, concluded that even if the surface density of adsorbed ions within the membrane is as small as at the membrane surface, the membrane charge strongly affects the Donnan potential. This is because the Donnan potential was affected not by the charge density expressed in surface density but by the charge density in volume density. Within the membrane, the charge density in volume density becomes very large since the pore radius is extremely small, even if the adsorbed amount in surface density was small. | |||||
書誌情報 |
夙川学院短期大学研究紀要 en : Bulletin of Shukugawa Gakuin College 巻 21, p. 71-78, 発行日 1997 |
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出版者 | ||||||
出版者 | 学校法人 夙川学院 夙川学院短期大学 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0285-3744 | |||||
論文ID(NAID) | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | NAID | |||||
関連識別子 | 110004639560 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.24668/shukulib.21.0_71 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |