Method for Analyzing pH-Sensitive Swelling of Amphoteric Hydrogels : Application to a Polyelectrolyte Complex Gel Prepared from Xanthan and Chitosan
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概要
- 論文の詳細を見る
The pH-sensitive swelling of a natural-polyelectrolyte complex gel, prepared from xanthan and chitosan, was investigated using a model based on the Donnan equilibrium theory with special attention to the dissociation behavior of the polyelectrolytes. First, the pH dependence of the degree of ionization for the xanthan-chitosan complex was evaluated by the potentiometric titration method, and the value of the dissociation constant for analyzing the swelling behavior was obtained. Second, the validity of the Donnan equilibrium was confirmed by measuring the concentration of sodium ion in the gels. By analyzing the swelling behavior of the gel using the model, it was suggested that the network properties of the gel altered with changes in the ambient pH. These results indicate that analysis using the parameters evaluated by potentiometric titration is useful for investigating the swelling behavior of ionic gels.
- 社団法人日本農芸化学会の論文
- 1995-08-23
著者
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KUMAGAI Hitoshi
Department of Food Science and Nutrition, Kyoritsu Women’s University
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NAKAMURA KOZO
Department of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo
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Sakiyama Takaharu
Department of Bioscience and Biotechnology, Faculty of Engineering, Okayama University
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中村 薫
京大 化研
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IKEDA Shinya
Department of Physics, Ehime University
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Ikeda Shinya
Department Of Applied Biological Chemistry Division Of Agriculture And Agricultural Life Sciences Th
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Nagahama Kazuhiro
Department Of Applied Microbial Technology The Kumanoto Institute Of Technology
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Kumagai Hitoshi
Central Research Institute Meiji Milk Products Co. Ltd.:(present Office)department Of Agricultural C
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Kumagai Hitoshi
Department Of Agricultural Chemistry The University Of Tokyo
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Chu Chia-hong
Department Of Applied Biological Chemistry Division Of Agriculture And Agricultural Life Sciences Th
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Nakamura Kozo
Department Of Bioscience And Biotechnology Faculty Of Agriculture Shinshu University
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Sakiyama Takaharu
Department Of Agricultural Chemistry Faculty Of Agriculture The University Of Tokyo
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Ikeda Shigeho
Department Of Applied Biological Chemistry Division Of Agriculture And Agricultural Life Sciences Th
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Kurihara H
Meiji Seika Kaisha Ltd. Yokohama Jpn
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Nakamura Kahoru
Department Of Nutrition Tokyo University Of Agriculture
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Kumagai Hitoshi
Department Of Agricultural And Biological Chemistry Nihon University
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Nakamura Kozo
Department Of Agricultural Chemistry The University Of Tokyo
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熊谷 仁
共立女子大学家政学部
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