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請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/24072
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| 題名: | An analysis of anisotropic gel forming process of chitosan |
| 作者: | Dobashi, T (Dobashi, Toshiaki)
Tomita, N (Tomita, Naoko)
Maki, Y (Maki, Yasuyuki)
Chang, CP (Chang, Chih Pong)
Yamamoto, T (Yamamoto, Takao) |
| 貢獻者: | Dept Text Engn |
| 關鍵詞: | Chitosan
Anisotropic
Gel
Dialysis
Birefringence |
| 日期: | 2011-03 |
| 上傳時間: | 2013-01-24 15:24:26 (UTC+8) |
| 摘要: | We have prepared anisotropic chitosan gels with birefringence by immersing a sandwiched chitosan in aqueous acetic acid into aqueous sodium hydroxide. The gel forming process was traced under observation with crossed nicols and open nicols with and without litmus agent. The time courses of the gel front, the birefringent layer and the pH-change layer agreed with each other fairly well. The early stage of the dynamics was expressed by a theory with an assumption of an OH(-) diffusion-limited process, whereas the behavior in the late stage deviated from the theoretical one. The deviation results from the effect of the outflow of protons, and the crossover of the two behaviors is attributed to the relaxation to the thermal equilibrium. (C) 2010 Elsevier Ltd. All rights reserved. |
| 關聯: | CARBOHYDRATE POLYMERS 卷: 84 期: 2 特刊: SI 頁數: 709-712 |
| 顯示於類別: | [紡織工程學系] 期刊論文
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