Development of a Model for Analyzing the Swelling Rate of Ionic Gels on the Basis of the Diffusion of Mobile Ions: Application to the pH-Sensitive Swelling of a Polyelectrolyte Complex Gel Prepared from Xanthan and Chitosan
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概要
- 論文の詳細を見る
A model for analyzing the swelling rate of ionic gels was developed on the basis of the diffusion of a species of mobile ion. This model was applied to the analysis of pH-sensitive swelling of a xanthan/chitosan complex gel in NaOH solutions of pH 9-12, using the sodium ion as the reference mobile ion. The time-course for swelling of gel beads with a pH change from 11 to 10 was successfully described by the developed model. The values for the diffusion coefficient obtained by fitting the model to the data were of the same order as those for the diffusion coefficient of the sodium ion measured for a membrane of the complex gel. Thus, it was confirmed that the swelling rate of the gel due to pH change was mainly controlled by the diffusion of mobile ions. However, the time-course for swelling of the gel at pH values below 10 was not satisfactorily explained by the model developed, suggesting that the change in the degree of ionization during swelling also affected the swelling rate of the xanthan/chitosan complex gel.
- 社団法人日本農芸化学会の論文
- 1996-10-23
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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崎山 高明
Department Of Bioscience And Biotechnology Faculty Of Engineering Okayama University:(present Addres
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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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